TWI860098B - Fluid Cylinder Sensor Mounting Structure - Google Patents

Abstract

A fluid pressure cylinder sensor mounting structure includes a fluid pressure cylinder, a cylinder body of the fluid pressure cylinder having at least one groove on at least one side of the outside; a sensor is mounted and fixed in the groove through a fixing seat. The size and appearance of the fixing seat can be customized according to the size of the groove, so that the sensor can be installed on cylinder bodies of different sizes.

Description

Sensor mounting structure for fluid cylinder

The present invention relates to a structure for installing a sensor for sensing the position of a fluid pressure cylinder piston on the outside of the cylinder.

In order to confirm the movement position of the piston of the fluid pressure cylinder, a position sensor is installed. This position sensor is located outside the cylinder body of the fluid pressure cylinder corresponding to the magnet installed on the piston. The sensor can further output detection signals for various control purposes.

Patent document TWI282834 discloses the above-mentioned technology, a detector installation position adjustment structure of a hydraulic cylinder, which allows at least a portion of the detector housing containing the detector element to be slidably engaged with an axially long groove provided on the outer surface of the cylinder body, and the detector housing is fixed to the long groove at any position in the axial direction of the hydraulic cylinder body by a fixing device.

The improvement of the above patented technology lies in that the slot width of the hydraulic cylinder's slot must match the size of the detector's housing. If one of them does not match, the installation cannot be completed. Based on this, a large hydraulic cylinder needs to match a detector with a large housing, which causes the cost and trouble of manufacturing the detector. Or vice versa, a large hydraulic cylinder needs to match a smaller detector housing with a smaller slot, which also causes the cost and trouble of cylinder manufacturing.

Based on the limitation of the matching size between the cylinder body of the hydraulic cylinder and the outer shell of the detector, the present invention proposes a solution.

The main technical solution of this invention to solve the above problems is:

A fluid pressure cylinder sensor mounting structure includes a fluid pressure cylinder, a cylinder body of the fluid pressure cylinder having at least one groove on at least one side of the outside; a sensor is mounted and fixed in the groove through a fixing seat. The size and appearance of the fixing seat can be customized according to the size of the groove, so that the sensor can be installed on cylinder bodies of different sizes.

The effects of the present invention are:

The size and shape of the fixing base can be customized according to the groove size of the cylinder body of the fluid pressure cylinder, so that the sensor can be installed on cylinder bodies of different sizes.

Since the fixing base is fixed in the groove, the fixing base is stably fixed in place, and the position of the sensor will not be easily moved.

10: Fluid cylinder

11: Cylinder body

12: Groove

13: Wide opening

131: Upper groove wall

132: Lower groove wall

14: Narrow opening

141: Stop bevel

143: Upper groove wall

144: Lower groove wall

15:Guide edge

16: Piston guide groove

20: Sensor

21: Shell

22: Keyhole

23: Limiting part

30: Fixed seat

31: Mounting slot

32: Locking hole

33: Screws

34: Eaves

35: Resist the Slope

36: Guidance Department

37: Stop hole

38: Stop screw

[Figure 1] Appearance diagram of the fluid cylinder mounted sensor of the present invention.

[Figure 2] is the front view of Figure 1.

[Figure 3] Exploded view of the sensor and fixing base of the present invention.

[Figure 4] is the combined appearance diagram of Figure 3.

[Figure 5] is a combined cross-sectional view of Figure 4.

[Figure 6] Partial front view of the fluid pressure cylinder of the present invention.

[Figure 7] is the VII-VII cross-sectional view of Figure 6.

[Figure 8] is the VII-VIII cross-sectional view of Figure 6.

[Figure 9] An exploded view of the sensor of the present invention installed outside the cylinder of the fluid pressure cylinder.

[Figure 10] Front view and operation diagram of the sensor of the present invention installed on the outside of the cylinder body of the fluid pressure cylinder.

[Figure 11] is the XI-XI cross-sectional view of Figure 10.

[Figure 12] A front view showing the sensor of the present invention installed outside the cylinder of a fluid pressure cylinder.

[Figure 13] is the XIII-XIII cross-sectional view of Figure 12.

[Figure 14] is a cross-sectional view of the cylinder body of the fluid pressure cylinder of the present invention.

In order to facilitate the explanation of the central idea of the invention in the above invention content column, it is expressed by a specific embodiment. The various objects in the embodiments are depicted according to the proportions, sizes, deformations or displacements suitable for the description, rather than being drawn according to the proportions of the actual components. In the following description, the same and symmetrically arranged components are represented by the same number. The directional terms such as "upper, lower" used in the following description are expressed according to the viewing direction and cannot be interpreted as a limitation on this creation.

As shown in Figures 1 and 2, a fluid pressure cylinder 10 has two grooves 12 on one side of the cylinder body 11, and a sensor 20 is set in each groove 12. The individual positions of the two sensors 20 are set according to the piston stroke of the fluid pressure cylinder 10. The two sensors 20 are used to sense the movement of the piston and further output detection signals for various control purposes. The sensor 20 described in the present invention is a general term, including the outer shell and the sensing element hidden in the outer shell.

As shown in Figures 3 to 5, the sensor 20 is installed in the groove 12 through a fixing seat 30.

A mounting groove 31 is provided on one side of the fixing base 30, and the mounting groove 31 passes through the length direction of the fixing base 30. The sensor 20 can be set into the mounting groove 31 from one end of the mounting groove 31. The sensor 20 includes a lock hole 22, which passes through the thickness direction of the outer shell 21 of the sensor 20, and the lock hole 22 is located at one end of the outer shell 21 of the sensor 20. The mounting groove 31 is provided with a locking hole 32 on its side wall. When the lock hole 22 corresponds to the locking hole 32, the screw 33 can be locked therein, thereby fixing the sensor 20 in the mounting groove 31.

The mounting groove 31 includes at least one flange 34, which is arranged along the length direction of the mounting groove 31. In the example, there are two flanges 34, which are respectively located at the upper part and the lower part of the mounting groove 31. The housing 21 of the sensor 20 is provided with at least one limiting portion 23 for accommodating the flange 34, and the limiting portion 23 is opened along the length direction of the housing 21 of the sensor 20. In the example, there are two limiting portions 23, which are respectively located at the upper part and the lower part of the housing 21 of the sensor 20. The sensor 20 enters the mounting groove 31, and the flange 34 is slidably embedded in the limiting portion 23, thereby restricting the sensor 20 from being detached from the opening side of the mounting groove 31.

The fixing seat 30 also includes two resisting inclined surfaces 35, which are respectively arranged at the upper and lower parts of the outer side of the fixing seat 30, and the two resisting inclined surfaces 35 are arranged along the length direction of the fixing seat 30. The two resisting inclined surfaces 35 have the same inclination angle and the directions are mirrored to each other.

One end of the fixing seat 30 also includes a guide portion 36, and the guide portion 36 forms one end of the fixing seat 30 into an outer arc shape.

One end of the mounting groove 31 passes through the thickness direction of the fixing seat 30 to form a stop hole 37 for a stop screw 38 to lock through.

As shown in Figures 6 to 8, the groove 12 on the outside of the cylinder body 11 of the fluid pressure cylinder 10 includes a wide opening portion 13 and a narrow opening portion 14, which are connected to each other. The junction between the wide opening portion 13 and the narrow opening portion 14 is formed into a concave arc-shaped guide edge 15. In terms of length, the wide opening portion 13 is shorter than the narrow opening portion 14.

The wide opening portion 13 includes an upper groove wall 131 and a lower groove wall 132 which are parallel to each other.

The narrow opening portion 14 includes an upper groove wall 143 and a lower groove wall 144 parallel to each other and two stop bevels 141, and the two stop bevels 141 are arranged along the upper groove wall 143 and the lower groove wall 144 respectively. The inclination angle and direction of the two stop bevels 141 match the two resisting bevels 35.

As shown in Figures 9 to 11, the fixing base 30 (together with the sensor 20 mounted thereon) is placed into the groove 12 from the wide opening 13, and the guide portion 36 of the fixing base 30 should be matched with the guide edge 15 of the wide opening 13 to avoid incorrect placement direction.

As shown in Figures 12 to 13, the fixing seat 30 (together with the sensor 20 mounted thereon) is pushed from the groove 12 of the wide opening portion 13 to the groove 12 of the narrow opening portion 14. After entering the narrow opening portion 14, the stop bevel 141 and the resisting bevel 35 contact each other. Move the fixing seat 30 (together with the sensor 20 mounted thereon) to the predetermined sensing position, then lock the stop screw 38 into the stop hole 37 of the fixing seat 30, the end of the stop screw 38 presses against the side wall of the groove 12, tighten the stop screw 38, and the fixing seat 30 moves in the opposite direction of tightening. Through the interaction of the stop slope 141 and the resisting slope 35, the fixing seat 30 is tightened in the groove 12, thereby completing the installation of the sensor 20 on the outside of the cylinder body 11 of the fluid pressure cylinder 10.

As shown in Figures 1 and 2, in the present invention, two sensors 20 are set according to the stroke position of the piston, and the two sensors 20 are installed in the upper and lower grooves 12 respectively, so that the two sensors 20 can avoid physical interference with each other, especially for small fluid cylinders 10.

As shown in Figure 14, two piston guide grooves 16 are provided inside the cylinder body 11 of the fluid pressure cylinder 10 of the present invention, which cooperate with the piston (not shown) equipped with a cam (not shown) in the cylinder body 11 to prevent the piston from rotating during actuation, thereby keeping the sensed element (such as a magnetic block) on the piston at an angular position that can be sensed by the sensor 20.

20: Sensor

21: Shell

22: Keyhole

23: Limiting part

30: Fixed seat

31: Mounting slot

32: Locking hole

33: Screws

34: Eaves

35: Resist the Slope

36: Guidance Department

37: Stop hole

38: Stop screw

Claims (4)

A sensor mounting structure for a fluid pressure cylinder includes a fluid pressure cylinder, a cylinder body of the fluid pressure cylinder having at least one groove on at least one side of the outside, and at least one sensor is arranged in the groove; its characteristics are: The groove includes a wide opening portion and a narrow opening portion that are connected to each other; the narrow opening portion includes two stop bevels, and the two stop bevels are respectively arranged at the upper and lower parts of the inner side of the groove; the two stop bevels are arranged along the length direction of the narrow opening portion; The sensor is mounted on a fixing seat; the fixing seat includes two resisting inclined surfaces, which are respectively arranged at the upper and lower parts of the outer side of the fixing seat, and the resisting inclined surfaces are arranged along the length direction of the fixing seat; the fixing seat includes a stop hole, and the stop hole is used for locking a stop screw; The fixing seat enters the groove from the wide opening portion and moves into the groove of the narrow opening portion, and the stop bevel and the resisting bevel fit and contact each other; the fixing seat is adjusted to a predetermined sensing position, and the stop screw is locked into the stop hole. The stop screw makes the stop bevel and the resisting bevel press against each other, and the fixing seat is fixed in the groove, and the sensor is installed in the groove. The sensor mounting structure of the fluid pressure cylinder as described in claim 1, wherein a mounting groove is opened on one side of the fixing seat, and the mounting groove runs through the length direction of the fixing seat; the sensor is set into the mounting groove from one end of the mounting groove; the sensor is fixed in the mounting groove by a screw lock. As described in claim 2, the sensor installation structure of the fluid pressure cylinder, wherein the installation groove includes at least one ridge, and the ridge is arranged along the length direction of the installation groove; an outer shell of the sensor is provided with at least one limit portion for accommodating the ridge, and the limit portion is opened along the length direction of the outer shell; the sensor enters the installation groove, and the ridge is embedded in the limit portion. The sensor mounting structure of the fluid pressure cylinder as described in claim 1, wherein one end of the fixing seat includes a guide portion; a guide edge is formed at the junction of the wide opening portion and the narrow opening portion; the shapes of the guide portion and the guide edge complement each other.

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