TWI708048B - Transmission structure of double-sided pressure gauge - Google Patents

Abstract

The transmission structure of a double-sided pressure gauge includes a bracket, two gears, a crown gear, two coil springs and a swing arm. The bracket includes three clips, which are arranged in parallel at intervals and connected to each other with the upper and lower cross bars. The two gears are respectively located between the middle clamp and the other two clamps, each passing through a middle shaft. One end of the two middle shafts is connected with the middle clamp, and the other end penetrates the other clamp. The two middle shafts are at the same level but Not connected. The crown gear meshes with the two gears at the same time. The two coil springs are respectively installed on the two central shafts. The swing arm is pivotally arranged between the middle clip and one of the other two clips. One end of the swing arm has a sector gear, which meshes with one of the two gears, and the other end includes a connecting rod, which is connected with the Baden tube.

Description

Transmission structure of double-sided pressure gauge

The present invention relates to a pressure gauge structure, and particularly relates to a pressure gauge transmission structure with double-sided display.

At present, the transmission structure of the conventional pressure gauge mostly uses a connecting rod at one end of the swing arm to connect to the Baden tube, and the other end with a sector-shaped gear row to mesh with a single gear, and the pointer is installed at one end of the middle shaft of the through gear. When the pressure change of the liquid or gas to be measured causes the deformation of the Baden tube, the connecting rod that drives the swing arm causes the swing arm to pivot, so that the fan-shaped gear row of the swing arm links the gear to rotate, and the central shaft rotates to cause the pointer to rotate to indicate The pressure value.

The above-mentioned pressure gauges generally used to measure the hydraulic pressure or air pressure of a machine or machinery are mostly single-sided display, that is, they can only be observed from a single direction. Of course, sometimes the operator needs to move back and forth on both sides of the machine or machine during operation. In order to facilitate the operation, a double-sided pressure gauge with pointers on both sides to indicate pressure has gradually been developed.

A common type of pressure gauge with double-sided display is that pointers are installed at both ends of the middle shaft of a single gear to achieve its purpose. However, since both hands are driven by the rotation of the same gear, the two hands rotate in the same direction when viewed from the same side. In other words, when the pressure gauge When the observing pointer rotates clockwise, when observing the other pointer from the back of the pressure gauge, it will display counterclockwise rotation. In this way, it is easy for the operator to move back and forth on the machine or both sides of the machine to observe the pressure gauge. If the value of the dial behind the pointer is not carefully read, it is easy to cause confusion due to habit and lead to misjudgment.

Therefore, one aspect of the present invention is to provide a double-sided display pressure gauge transmission structure, so that the pointers of the pressure gauge are driven by different gears to rotate, and the middle shafts of the two gears are not connected, and a crown gear is used to connect a gear The rotation is transmitted to the other gear, and the rotation direction of the two gears is reversed by the crown gear. In this way, when the pointer of the pressure gauge is observed to rotate clockwise, when the other pointer of the pressure gauge observes the other pointer, it will also appear to rotate clockwise, thus reducing the operator's movement to and from both sides of the machine or machine during operation. When observing the pressure gauge, confusion and misjudgment occurred due to habit.

According to an embodiment of the present invention, a transmission structure of a double-sided pressure gauge includes a bracket, a first gear, a second gear, a crown gear, two coil springs, and a swing arm. The bracket includes a first clip, a middle clip, and a second clip, which are arranged in parallel at intervals and connected to each other with the upper and lower bars. The first gear is located between the first clip and the middle clip, and passes through the first middle shaft. One end of the first middle shaft is connected to the middle clip, and the other end penetrates the first clip; the second gear is located between the middle clip and the second Between the clips, the second central axis penetrates, one end of the second central axis is connected with the central clip, and the other end penetrates the second clip, wherein the first central axis and the second central axis are at the same level but not connected. The crown gear meshes with the first gear and the second gear at the same time. The two coil springs are respectively installed on the first central shaft and the second central shaft. The swing arm is pivoted between the first clip or the second clip and the middle clip, and one end of the swing arm has a fan shape The gear meshes with the first gear or the second gear, and the other end contains a connecting rod, which is connected with the Baden tube.

According to an embodiment of the present invention, the first clip is located in front of the middle clip.

100: Transmission structure

110: bracket

112: first clip

114: middle clip

116: second clip

118: upper crossbar

119‧‧‧Lower Crossbar

120‧‧‧First Gear

122‧‧‧First bottom axis

130‧‧‧Second gear

132‧‧‧Second bottom bracket

140‧‧‧Crown Gear

150、160‧‧‧Coil spring

170‧‧‧Swing arm

172‧‧‧Segment Gear

174‧‧‧Connecting rod

200‧‧‧Baden Tube

A, B, C‧‧‧Arrow

In order to make the above and other objectives, features, advantages and embodiments of the present invention more comprehensible, the description of the accompanying drawings is as follows: Figure 1 shows the transmission of a double-sided pressure gauge according to an embodiment of the present invention Front view of the structure; Fig. 2 is a three-dimensional schematic diagram showing the transmission structure of the double-sided pressure gauge in Fig. 1; Fig. 3 is a left side view of the transmission structure of the double-sided pressure gauge in Fig. 1; Fig. 4 It is another three-dimensional schematic diagram showing the transmission structure of the double-sided pressure gauge in Fig. 1; and Fig. 5 is a front schematic diagram showing the transmission structure of the double-sided pressure gauge in Fig. 1.

Please refer to Figures 1 and 2 at the same time. Figure 1 is a front view of a transmission structure 100 of a double-sided pressure gauge according to an embodiment of the present invention, and Figure 2 is a double-sided view of Figure 1 The three-dimensional schematic diagram of the transmission structure of the pressure gauge. The transmission structure 100 of the double-sided pressure gauge includes a bracket 110, a first gear 120, a second gear 130, a crown gear 140, two coil springs 150 and 160 and a swing arm 170. The transmission structure 100 of the double-sided pressure gauge is installed in a pressure gauge (not shown) that can be displayed on both sides. The conventional Baden tube 200 is connected to one end of the swing arm 170, and the pressure or hydraulic pressure of the test object The mounting tube 200 deforms so that the swing arm 170 drives the gear to rotate to indicate the pressure value, as shown in Figure 1. Show.

Please refer to FIG. 2, the bracket 110 includes a first clip 112, a middle clip 114, and a second clip 116, which are arranged in parallel at intervals and connected to the upper cross bar 118 and the lower cross bar 119. The three clips 112, 114, and 116 are all L-shaped. According to an embodiment of the present invention, the three L-shaped clips all face to the right and follow the order of the first clip 112, the middle clip 114, and the second clip 116. The front and back are arranged in parallel at intervals, so the first clip 112 is defined as the front side, and the second clip 116 is defined as the back side. However, this is only an example of an embodiment of the present invention and is not intended to limit the scope of the present invention. In another embodiment, the three L-shaped clips may all face to the left, and the first clip 112 is defined as the back side, and the second clip 116 is defined as the front side.

Please refer to Figures 2 and 3. Figure 3 shows the left side view of the transmission structure of the double-sided pressure gauge in Figure 1. The first gear 120 is located between the first clip 112 and the middle clip 114 and passes through the first middle shaft 122. One end of the first middle shaft 122 is connected to the middle clip 114 and the other end penetrates the first clip 112. A pressure gauge pointer (not shown) can be installed on the first center shaft 122 that penetrates the first clip 112, and a dial (not shown) is installed between the pressure gauge pointer and the first clip 112, so that When the first gear 120 rotates to drive the first middle shaft 122 to rotate, the pressure gauge pointer (not shown) will also be driven to rotate to achieve the purpose of indicating the pressure value.

The second gear 130 is located between the middle clamping piece 114 and the second clamping piece 116, and passes through the second middle shaft 132. One end of the second middle shaft 132 is connected to the middle clamping piece 114, and the other end penetrates the second clamping piece 116. The central axis 122 and the second central axis 132 are located at the same level but not connected. Another pressure gauge pointer (not shown) can be installed on the second central shaft 132 that penetrates the second clip 116, and a dial (not shown) is installed between the pressure gauge pointer (not shown) and the second clip 116 As a result, when the second gear 130 rotates to drive the second middle shaft 132 to rotate, the pressure gauge pointer (not shown) also Will be driven to rotate to achieve the purpose of indicating the pressure value.

Please refer to Fig. 2 to Fig. 5. Fig. 4 shows another three-dimensional schematic diagram of the transmission structure of the double-sided pressure gauge in Fig. 1, and Fig. 5 shows the transmission of the double-sided pressure gauge in Fig. 1 Front view of the structure. According to an embodiment of the present invention, the crown gear 140 is provided on the left side of the bracket 110 and meshes with the first gear 120 and the second gear 130 at the same time. Since the aforementioned first central shaft 122 and the second central shaft 132 are located at the same level but not connected, the rotation of the first gear 120 does not directly drive the second gear 130 to rotate through the first central shaft and the second central shaft. The transmission structure 100 of the double-sided pressure gauge of the present invention uses the crown gear 140 to mesh with the first gear 120 and the second gear 130 at the same time to transmit the rotation of the first gear 120 to the second gear 130, and through the crown gear 140, The first gear 120 and the second gear 130 rotate in opposite directions.

Please refer to FIG. 2, the coil spring 150 is installed on the first center shaft 122, and the coil spring 160 is installed on the second center shaft 132.

Please refer to Figure 2 and Figure 5. According to an embodiment of the present invention, the swing arm 170 is pivoted between the first clip 112 and the middle clip 114. One end of the swing arm 170 has a sector gear 172 that meshes with the first gear 120, as shown in Figure 2, that is, the swing arm 170 The arm 170 and the crown gear 140 are respectively located on opposite sides of the bracket 110. The other end of the swing arm 170 includes a connecting rod 174 connected to the Baden tube 200, as shown in FIG. 2. According to another embodiment of the present invention, the swing arm can also be pivoted between the second clip and the middle clip, and the sector gear of the swing arm meshes with the second gear.

Please refer to Figures 2 to 5 at the same time. In this embodiment, when the pressure of the liquid or gas to be measured causes the deformation of the Baden tube 200 to drive the swing arm 170 to swing through the connecting rod 174, the sector gear 172 at the other end of the swing arm 170 will rotate the first gear 120, and then The crown gear 140 meshes with the first gear 120 and the second gear 130 at the same time to transmit the rotation of the first gear 120 to the second gear The wheel 130 rotates the second gear 130. When viewed from the front (front side) of the transmission structure 100 of the double-sided pressure gauge of the present invention, when the first gear 120 rotates clockwise due to the linkage of the sector gear 172 of the swing arm 170 (that is, the direction shown by arrow A in Figure 3) ), it will drive the crown gear 140 to rotate in the direction indicated by arrow C in Figure 3, and then the crown gear 140 will link the second gear 130 to rotate in the direction indicated by arrow B in Figure 3, namely the first gear 120 and the second gear 120 The gear 130 rotates in the opposite direction. At this time, if viewed from the back (rear side) of the transmission structure 100 of the double-sided pressure gauge of the present invention, the second gear 130 also rotates in a clockwise direction. In this way, the pressure gauge with double-sided display will rotate clockwise no matter which direction the pointer is observed, thereby reducing the confusion caused by habit when the operator moves back and forth on both sides of the machine or machine to observe the pressure during operation. Circumstances of misjudgment.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be subject to those defined in the attached patent scope.

100‧‧‧Transmission structure

110‧‧‧bracket

112‧‧‧First clip

114‧‧‧Middle clip

116‧‧‧Second Clip

118‧‧‧Upper bar

119‧‧‧Lower Crossbar

120‧‧‧First Gear

122‧‧‧First bottom axis

130‧‧‧Second gear

132‧‧‧Second bottom bracket

140‧‧‧Crown Gear

150、160‧‧‧Coil spring

170‧‧‧Swing arm

172‧‧‧Segment Gear

174‧‧‧Connecting rod

Claims (2)

A transmission structure for a double-sided pressure gauge, comprising: a bracket, including a first clip, a middle clip, and a second clip, arranged in parallel at intervals and connected to each other by an upper bar and a lower bar ; A first gear is located between the first clip and the middle clip, and a first middle shaft penetrates the first gear, and one end of the first middle shaft is connected to the middle clip, and the other end penetrates the first clip A second gear is located between the second clip and the middle clip, and a second middle shaft penetrates the second gear, and one end of the second middle shaft is connected with the middle clip, and the other end penetrates the second Clip, wherein the first central shaft and the second central shaft are at the same level but not connected; a crown gear meshes with the first gear and the second gear at the same time; two coil springs are respectively installed on the first central shaft And the second central shaft; and a swing arm pivoted between the first clip or the second clip and the middle clip, and one end of the swing arm has a sector gear, and the first gear or the second The gear meshes, and the other end contains a connecting rod, which is connected with a Baden tube. For example, the transmission structure of the double-sided pressure gauge in the scope of patent application, wherein the first clip is located in front of the middle clip.

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