CN218413503U - Anti-reversion double-side driving counter - Google Patents

Abstract

The utility model discloses a prevent reversing two side drive counters, including curb plate, character wheel subassembly, character wheel axle and transmission shaft, the worm wheel is installed respectively at character wheel axle both ends, and the character wheel axle is equipped with drive assembly at first character wheel position, drive assembly includes circular slab, connecting piece and holding ring, and the circular slab suit is epaxial at the character wheel, and circular slab one side is close to the outer lane position and sets up the annular groove, and the circular slab periphery is equipped with a plurality of through-holes with the annular groove intercommunication, the connecting piece is for having two bellied sawtooth pieces of spaced at least, and the arch of sawtooth piece stretches out from adjacent through-hole on the circular slab, and during the annular groove was established to the protruding lower part of sawtooth piece through the holding ring card, the tooth portion cooperation that connecting piece and first character wheel inner circle set up, the character wheel epaxial cover at character wheel subassembly position is equipped with the torsional spring, and torsional spring one end is fixed with the character wheel axle, the torsional spring other end with the curb plate contact. The utility model discloses the anti-vibration performance is good, can effectively prevent the reversal action to can follow both sides rotary drive count work.

Description

Anti-reversion double-side driving counter

Technical Field

The utility model belongs to mechanical counter field relates to the improvement of counter transmission and anti-inversion structure, especially relates to a prevent reversing two side drive counters.

Background

The rotation counter belongs to one type of mechanical counters, is connected with equipment through a driving shaft and drives the counting, the driving shaft rotates for a circle, and counting work is carried out on a counting value according to a character wheel transmission ratio. The rotary counter can measure the rotating speed of various machines and parameters such as measuring length, depth, flow and the like, the highest rotating speed of the device is usually 1000 r/min, the structure is precise, but the requirement on an assembly process is high. Because the installation volume is less, the rotary counter is generally applied more in the mechanical industry, the communication industry, the printing industry and the light industry.

The counting module or print wheel mechanism in the rotary counter is generally a plurality of print wheels with numbers arranged in sequence. The first character wheel in the character wheels is the lowest character wheel, and a carry wheel is arranged between the adjacent character wheels. Taking a 6-bit print wheel as an example, the maximum possible count and display range is 000000 to 999999. The adjacent character wheels are usually provided with carry structures, for example, a tooth ring with a notch is arranged on the side surface of the lower character wheel, and the higher character wheel is provided with the tooth number corresponding to the system number. When the carrying device works, the adjacent character wheels are the low-order character wheels which are the former character wheels, the latter character wheels are the high-order character wheels, the low-order character wheels rotate for a circle to drive the carrying wheel to rotate for a lattice, and then the adjacent high-order character wheels are driven to rotate for a single lattice, so that the carrying operation is completed.

Existing rotary counter assemblies are still manufactured manually. Because of the higher restriction of structure and part precision requirement, artifical production efficiency is lower. In addition, the transmission structure of the rotary counter is generally in rigid connection, and when the rotary counter works at a high speed, the transmission structure has poor vibration resistance, so that the problems of unsmooth transmission, such as overlarge position deviation, clamping stagnation and the like, are easy to occur, and the normal work and the service life of the counter are influenced.

In some special occasions, the two-side driving print wheel assembly is required to count work or be conveniently connected with external equipment. In order to avoid damage to the counter caused by reverse rotation, some counters are also provided with an anti-reverse mechanism, but most of the existing rotating counters are not provided with a non-return mechanism, or the arranged non-return mechanism is complex, and most of the counter can only drive the character wheel assembly to work from one side. Therefore, the conventional counter structure arrangement brings inconvenience to normal work metering and use.

For example, "a mechanical counter preventing reverse rotation" disclosed in chinese patent (No. CN 203165002U), the mechanical counter is provided with a carry wheel between adjacent character wheels, the lowest character wheel is a leading character wheel, the carry wheel is provided with long teeth and short teeth arranged at intervals, the thickness of the long teeth is greater than that of the short teeth, between adjacent side surfaces of the adjacent character wheels, the side surface of the high character wheel is provided with carry teeth matched with the long teeth and the short teeth, the low character wheel is provided with a tooth ring, the tooth ring is provided with a carry notch matched with the long teeth, and the tooth ring of the leading character wheel is provided with a protruding front tooth for shifting the short teeth only at the front end of the carry notch. The utility model discloses a leading character wheel ring only lacks the structure that the front side set up the front tooth in the carry groove, makes mechanical counter only normally count when corotation, and when mechanical counter connects in reverse, leading character wheel can block automatically, prevents the counter-rotation count.

The mechanical counter disclosed above still does not solve the problem of vibration prevention of the transmission structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent reversing two side drive counters for solve current mechanical counter transmission structure anti vibration performance relatively poor, end contrary mechanism set up unreasonable and only can unilateral rotary drive scheduling problem, bring inconveniently for counter work measurement and use.

In order to realize the purpose of the utility model, adopt the following technical scheme:

1. the anti-reversion double-side driving counter comprises a side plate, a character wheel assembly, a character wheel shaft and a transmission shaft, wherein the transmission shaft is vertically installed on one side of the side plate, the character wheel assembly is sleeved on the outer sides of the character wheel shaft and the transmission shaft, the character wheel assembly comprises a plurality of coaxial character wheel pieces, the plurality of character wheel pieces sequentially comprise a first character wheel, a plurality of middle character wheels and a last character wheel, transmission wheels are respectively arranged on the inner rings of the middle character wheels and the last character wheels, the transmission wheels are sleeved on the transmission shaft, the former character wheel piece drives the latter character wheel piece to count progressively through the transmission wheels, worm wheels are respectively and fixedly installed at two ends of the character wheel shaft, a driving assembly is arranged on the first character wheel position of the character wheel shaft and comprises a circular plate, a connecting piece and a positioning ring, the circular plate is sleeved on the character wheel shaft, an open annular groove is formed in the position, close to the outer ring, a plurality of through holes communicated with the annular groove are formed in the periphery of the circular plate, the connecting piece is at least provided with two spaced protruding saw teeth, the protrusions of the saw tooth piece extend out of the adjacent through holes on the character wheel plate, the connecting piece is clamped in the annular groove, the connecting piece is in contact with the tooth part of the torsion spring, and one end of the torsion spring is in contact with the other end of the character wheel, and one end of the torsion spring is fixed on the character wheel.

In order to further improve the utility model discloses an effect can also adopt following technical scheme:

according to the anti-reversion double-side driving counter, the word wheel shafts on two sides of the driving assembly are provided with the limiting grooves, the limiting grooves are provided with the split retaining rings, and the split retaining rings are attached to two sides of the driving assembly.

According to the anti-reversion double-side driving counter, the sealing plate is mounted on one side of the circular plate with the annular groove through the screw, and the sealing plate is sleeved on the word wheel shaft.

According to the anti-reversion double-side driving counter, the annular groove is internally provided with a plurality of radial support ribs, and the support ribs are provided with clamping grooves matched with the positioning rings.

According to the anti-reversion double-side driving counter, 4-6 sets of connecting pieces are uniformly distributed on the linkage plate at the same interval, and a plurality of sets of connecting pieces are sequentially connected at the head.

According to the anti-reversion double-side driving counter, the side plate is provided with the character wheel frame, one end of the character wheel frame is fixed with the side plate, the other end of the character wheel frame is provided with the positioning plate, the positioning plate is positioned at the inner ring of the head character wheel, and the character wheel assembly is axially limited and installed on the character wheel frame through the positioning plate.

The counter is characterized in that 3-7 middle print wheels are arranged.

According to the anti-reversion double-side driving counter, the counter shell is mounted on the outer side of the driving assembly, and the front face of the counter shell is provided with the transparent reading window.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a drive assembly installs and fixes a position the convenience, and the axial is gone up through spacing groove and split ring cooperation location, has improved the efficiency and the quality of equipment production.

2. This counter can carry out rotary drive from both sides, makes things convenient for character wheel subassembly measurement work and use, has better application scope, can need carry out nimble configuration and installation more on-the-spot.

3. The utility model discloses the epaxial cover of character wheel at character wheel subassembly position is equipped with the torsional spring, torsional spring one end and character wheel axle fixed connection, the torsional spring other end and curb plate contact. When the character wheel or the worm wheel drives the counter to rotate reversely, the counter can be locked through the tension action of the torsion spring, so that the action of the head character wheel and the character wheel shaft is limited, and the damage to the metering accuracy and the counter caused by the reverse rotation can be effectively prevented.

3. The utility model discloses a connecting piece and the cooperation of first character wheel, drive assembly drive character wheel subassembly work. The two protrusions with the intervals on the connecting piece are in surface contact with the inner ring tooth part of the head character wheel, the two protrusions are connected tightly and stably, and the problems of clamping stagnation of a transmission structure, overlarge position deviation and the like are avoided. And the connecting piece is of a saw-toothed structure and has certain buffering, vibration-damping and energy-absorbing functions, so that the vibration-resisting performance of the driving assembly can be better improved. The interference of vibration to the counter metering is overcome, and the metering accuracy of the counter is improved.

Drawings

Fig. 1 is a schematic diagram of the internal structure of the present invention;

FIG. 2 is a schematic structural view of the print wheel assembly of FIG. 1;

FIG. 3 is a perspective view of the word wheel shaft of FIG. 1;

FIG. 4 is a schematic view of the connection between the drive assembly and the print wheel assembly of FIG. 2;

FIG. 5 is a schematic view of the internal structure of the driving assembly shown in FIG. 4;

FIG. 6 is a schematic structural view of the circular plate of FIG. 5;

fig. 7 is a schematic view of the structure of the connector shown in fig. 5.

Reference numerals: 1-side plate, 2-counter shell, 3-transmission shaft, 4-character wheel frame, 5-positioning plate, 6-character wheel component, 7-first character wheel, 8-middle character wheel, 9-character wheel shaft, 10-torsion spring, 11-transmission wheel, 12-driving component, 13-round plate, 14-connecting piece, 15-bulge, 16-positioning ring, 17-supporting rib, 18-clamping groove and 19-sealing plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.

As shown in fig. 1 and 2, the present embodiment discloses an anti-reverse double-side driving counter, which mainly comprises a side plate 1, a character wheel frame 4, a transmission shaft 3, a character wheel assembly 6, a character wheel shaft 9, a torsion spring 10, a transmission wheel 11, a driving assembly 12, and the like.

Fig. 2 shows the side plate 1 as a positioning and mounting base for other parts of the counter. A character wheel frame 4 matched with a character wheel assembly 6 is arranged on one side of the side plate 1.

Fig. 1 shows that worm gears are mounted on both ends of the word shaft 9. The worm gear is used for connecting with external equipment or components, and the character wheel assembly 6 is driven to work through the driving assembly 12.

Therefore, the counter of the embodiment can rotate to drive the character wheel assemblies from two sides to count, is convenient for the character wheel assemblies 6 to meter and use, has a good application range, and can be flexibly configured and installed according to field requirements.

The character wheel shaft 9 of the present embodiment is an input shaft and a power shaft, in addition to being a center shaft of the character wheel member.

The other end of the character wheel frame 4 opposite to the side plate 1 is provided with a positioning plate 5, and the positioning plate 5 is positioned at the inner ring of the head character wheel. The character wheel assembly 6 can be limited in the axial direction through the positioning plate 5, the movable distance of the character wheel is restrained, and normal and stable rotating work of the character wheel is guaranteed.

For convenience of understanding and uniform expression, "counter" and "mechanical counter" are referred to in the present embodiment as the same meaning.

With continued reference to fig. 1, in order to protect the safety of the components in the counter, the working performance of the counter is prevented from being affected by collision, dust, foreign matters and the like. In the present embodiment, the counter case 2 is mounted on the character wheel shaft 9, the character wheel assembly 6, and the drive assembly 12. In addition, a transparent reading can also be provided on the front side of the counter housing 2. The reading window is convenient for a user to read the metering value, and whether the counter works normally or not is conveniently judged.

As shown in fig. 2, the character wheel assembly 6 in this embodiment is a counting module provided with 5 character wheel members, a plurality of character wheel members are coaxially attached and arranged, and are sequentially a head character wheel 7, 3 middle character wheels 8 and a tail character wheel, and the inner rings of the middle character wheels 8 and the tail character wheels are respectively provided with a driving wheel 11. The first character wheel 7 drives the latter character wheel piece to act through the driving wheel 11, and so on, and the progressive counting work of the character wheel assembly 6 is completed.

Each character wheel piece is also called a digit wheel, 0-9 uniformly distributed Arabic numerals are marked on the periphery of the cylindrical surface of each character wheel piece at intervals, and the rest rear character wheel pieces rotate in a progressive mode in a clearance mode 10 except for the first character wheel 7: a gear ratio of 1. That is, the first character wheel 7 drives the adjacent rear character wheel to act through the corresponding driving wheel 11, and so on. Under the drive of the worm wheel and the drive component 12, the first character wheel 7 is firstly accumulated and counted, and the last character wheel piece of the adjacent bit is counted for 1 time after the counting is completed, namely according to the following steps of 10: a scale of 1 counts up incrementally.

The head character wheel 7 is driven by the worm wheel to carry out counting work. Because of the 5-bit word wheel used in this embodiment, the maximum count value that can be displayed cumulatively is 99999, and no return-to-zero device is provided, i.e., the next cycle is started from 00000 bits after the maximum count value is recorded.

It should be noted that, like the counter with the return-to-zero device, the 5-bit anti-reverse double-side driving counter disclosed in this embodiment can also count circularly. In distinction, the counter with the back-to-zero device may be reset by manual or mechanical operation, rather than having to count up to a maximum count value to cycle.

With continued reference to fig. 1, the first character wheel 7, the middle character wheel 8 and the last character wheel in this embodiment may be structurally implemented by using an existing character wheel member or digit wheel. Because the first character wheel 7 needs to drive the adjacent rear character wheel to act, a dial block and the like need to be arranged between the first character wheel and the adjacent rear character wheel to realize a progressive counting structure, and the same is true on the adjacent rear character wheel. However, the last character wheel is positioned at the front side of the side plate 1, so that the last character wheel does not need to be provided with corresponding progressive transmission parts such as a shifting block and the like because progressive counting is not needed at the side close to the side plate 1.

The word wheel shaft 9, the transmission shaft 3, the side plate 1, the torsion spring 10, the counter housing 2, the connecting member 14 in the driving assembly 12, and the like in this embodiment may be made of a corrosion-resistant metal material. The influence of oxidation, abrasion and the like on the quality in use is avoided, so that the service life of the counter can be ensured.

With continued reference to fig. 2, the character wheel assembly 6 is sleeved on the outer peripheries of the character wheel shaft 9, the transmission shaft 3 and the character wheel frame 4. In this embodiment, the character wheel assembly 6 is provided with 5 character wheel elements, and a driving wheel 11 is also required to be arranged between adjacent character wheel elements.

Therefore, when the counter is assembled, the character wheel pieces and the transmission wheel 11 and the character wheel pieces need to be kept in a certain distance range, so that smooth rotation counting can be guaranteed, and collision influence cannot be generated. Therefore, the relevant installation distance needs to be strictly controlled and detected so as to ensure the use quality of the counter.

As shown in fig. 1 and 3, the head character wheel 7 of the character wheel shaft 9 of the present embodiment is provided with a driving assembly 12. In order to facilitate the positioning of the driving component 12, limit grooves can be further arranged on the character wheel shafts 9 on two sides of the driving component 12, and split washers are installed on the limit grooves.

Structurally, the split collars abut both sides of the drive assembly 12 to enable the drive assembly 12 to be positioned on the word-wheel shaft 9. Meanwhile, the installation positions and the intervals of the character wheel assembly 6 and the character wheel shaft 9 are convenient to control, and the assembly production efficiency and quality are improved.

The utility model discloses the cover is equipped with torsional spring 10 on the character wheel axle 9 at 6 positions of character wheel subassembly, and 10 one ends of torsional spring are connected fixedly with character wheel axle 9 periphery or drive assembly 12, the torsional spring 10 other end with 1 contact of curb plate.

When the worm wheel drives the counter to rotate reversely, the counter can be locked through the tension action of the torsion spring 10, so that the actions of the head character wheel 7 and the character wheel shaft 9 are limited, and the damage of the counter and the metering accuracy caused by the reverse rotation can be effectively prevented.

Except utilizing torsional spring 10 and curb plate cooperation to prevent reversing, can also set up boss structure on character wheel axle 9, when this counter count rotates, because the torsional spring is along with character wheel axle 9 syntropy rotatory, the resistance is less, consequently, can not influence normal work measurement, when reverse rotation appears in this counter, because the resistance increase of torsional spring 10 can produce the extrusion relatively, torsional spring 10 at the boss position and character wheel spare inner circle frictional contact this moment, further increased character wheel axle 9 reverse rotation's damping force, thereby can realize the quick stop of reversal.

The drive assembly 12 is structurally, as shown in fig. 4-6, comprised of a circular plate 13, a connecting member 14 and a retaining ring 16. The center of the circular plate 13 is provided with a shaft hole and is sleeved on the character wheel shaft 9. An open annular groove is formed in one side of the circular plate 13 close to the outer ring, and a plurality of through holes communicated with the annular groove are formed in the periphery of the circular plate 13.

In order to cooperate with the circular plate 13, as shown in fig. 5 and 7, the present embodiment is designed to realize that the driving assembly 12 drives the print wheel assembly 6 to work. The attachment member 14 is a serrated member with at least two spaced projections 15.

The protrusions 15 of the saw tooth member may extend from adjacent through holes in the circular plate 13 and the lower portion of the protrusions 15 of the saw tooth member is located in an annular recess and is located by a locating ring 16. The coupling 14 cooperates with a toothing provided in the inner ring of the head character wheel.

In addition, a plurality of supporting ribs 17 can be arranged in the annular groove, and clamping grooves 18 matched with the positioning rings 16 are formed in the supporting ribs 17. The clamping groove 18 can ensure that the positioning ring 16 is firmly connected with the circular plate 13, and the support rib 17 can effectively support the connecting piece 14 and limit the deformation distance between the connecting piece 14 and the positioning ring 16. Therefore, the connecting piece 14 can resist vibration and ensure tight connection with the inner ring tooth part of the character wheel, and the problem of overlarge position deviation can not occur.

The connector 14 of this embodiment is provided with 5 sets and is in turn connected end to form a single unit. To facilitate the installation of the connecting member 14, a notch may be formed in the connecting member 14 as a whole, as shown in fig. 7.

As shown in fig. 6, in order to ensure the quality of the mounting and stability of the attachment member 14 and the positioning ring 16. A sealing plate 19 is arranged on one side of the circular plate 13 with the annular groove, and the sealing plate 19 is sleeved on the character wheel shaft 9.

This embodiment adopts connecting piece 14 and first character wheel cooperation, and two of this connecting piece 14 upper band spaced are face contact with first character wheel inner circle tooth portion between protruding 15, and both are connected closely and stably, avoid appearing use and the quality problems that transmission structure jamming, positional deviation are too big etc. lead to.

The connecting member 14 is a saw-toothed structure with energy absorbing space, and has certain buffering and vibration damping effects, so that the vibration resistance of the driving assembly 12 can be improved. The interference of vibration to the counter metering is overcome, and the metering accuracy of the counter is improved.

The technical contents not described in detail in the present application are all known technologies.

Claims (8)

1. The counter is characterized in that worm wheels are fixedly mounted at two ends of the character wheel shaft respectively, a driving assembly is arranged at the head character wheel position of the character wheel shaft and comprises a circular plate, a connecting piece and a positioning ring, the circular plate is sleeved on the character wheel shaft, an annular groove which is opened is formed in the position, close to the outer ring, of one side of the circular plate, a plurality of through holes communicated with the annular groove are formed in the periphery of the circular plate, the connecting piece is a sawtooth piece with at least two spaced bulges, the bulges of the sawtooth piece extend out of the adjacent through holes in the circular plate, the lower part of the bulge of the sawtooth piece is provided with an annular groove through the positioning ring, the inner ring is clamped in the annular groove, the torsion spring is in contact with the character wheel shaft, and the other end of the torsion spring is sleeved on the character wheel shaft and is fixedly matched with the other end of the torsion spring.

2. The anti-reversion double-side driving counter according to claim 1, wherein the word wheel shafts on both sides of the driving component are provided with limiting grooves, and split retaining rings are mounted on the limiting grooves and attached to both sides of the driving component.

3. The counter of claim 1, wherein the sealing plate is mounted on one side of the circular plate with the annular groove by a screw, and the sealing plate is sleeved on the word wheel shaft.

4. The anti-reversion double-sided drive counter according to claim 1, wherein a plurality of radial support ribs are arranged in the annular groove, and the support ribs are provided with clamping grooves matched with the positioning rings.

5. The counter of claim 1, wherein the connecting members are evenly distributed on the linkage plate at 4-6 sets at the same interval, and the connecting members are sequentially connected at the head.

6. The anti-reversion double-side driving counter according to claim 1, wherein the side plate is provided with a character wheel frame, one end of the character wheel frame is fixed with the side plate, the other end of the character wheel frame is provided with a positioning plate, the positioning plate is positioned at the inner ring of the head character wheel, and the character wheel assembly is axially limited and mounted on the character wheel frame through the positioning plate.

7. The anti-inversion double-sided drive counter of claim 1, wherein the number of the intermediate print wheels is 3-7.

8. The anti-reversion double-sided drive counter according to claim 1, wherein the drive assembly is externally mounted with a counter housing with a transparent reading window on the front face of the counter housing.

Images