Flat pressure sensor for narrow spaces

Abstract

The utility model belongs to pressure sensor technical field, and disclose a kind of flat pressure sensor for narrow space, including shell, the inside of shell is equipped with installation cavity, the outer rim of installation cavity inner cavity is sleeved with signal processing unit, the inside of installation cavity is slidably connected with the guiding mechanism of several even distribution, the top of shell is sleeved with contact subassembly, the lower end of contact subassembly extends to the inside of installation cavity and with the upper end of guiding mechanism swing joint, the other end of guiding mechanism is supported on signal processing unit, the outside of contact subassembly is connected with several cleaning assembly.The utility model is pressed when contact head by resistance-reducing ball, under the cooperation of positioning assembly, make contact head fast rotation, and then under the cooperation of linkage sliding slot and linkage sliding block drive several connecting head and dust removal plate fast rotation, and fastly push out dust of shell top, to far away from the gap between contact head and shell.

Description

Technical Field

[0001] This invention belongs to the field of pressure sensor technology, specifically a flat pressure sensor for use in confined spaces. Background Technology

[0002] Pressure sensors are widely used in medical, industrial, and environmental monitoring fields because they can convert external pressure signals into electrical signals. In particular, pressure sensors in health monitoring equipment can be used to monitor the pressure of certain organs in the human body. Pressure sensors are usually composed of pressure-sensitive elements and signal processing units.

[0003] Sensors and similar components require sustained high sensitivity. However, in open environments, dust inevitably accumulates, necessitating regular cleaning to prevent surface dust from entering the components through gaps and interfering with their operation. Pressure sensors have pressure-sensing contacts. Since one end of the contact connects to the internal signal processing unit while the other extends outside, a gap exists between the contact and the sensor housing. This gap ensures the contact's axial movement is flexible but also allows dust to easily enter. Flat pressure sensors used in confined spaces face challenges due to limited installation space, hindering regular cleaning and impacting their lifespan and sensitivity.

[0004] Therefore, it is necessary to develop a flat pressure sensor for use in confined spaces to address the shortcomings of existing technologies. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a flat pressure sensor for use in confined spaces, which has the advantage of automatic cleaning.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flat pressure sensor for confined spaces, comprising a housing, an installation cavity inside the housing, a signal processing unit sleeved on the outer edge of the installation cavity, a plurality of evenly distributed guide mechanisms slidably engaged inside the installation cavity, a contact assembly sleeved on the top of the housing, the lower end of the contact assembly extending into the installation cavity and movably connected to the upper end of the guide mechanism, the other end of the guide mechanism abutting against the inner wall of the signal processing unit, a plurality of evenly distributed cleaning components connected to the outer side of the upper end of the contact assembly, the bottom of the cleaning components fitting against the top of the housing, and the outer end of the cleaning components extending to the outer edge of the housing;

[0007] The contact assembly includes a contact head that is movably sleeved in the middle of the housing. A positioning assembly is sleeved on the lower end of the contact head, and the lower end of the positioning assembly is fixedly connected to the inside of the mounting cavity. When the contact head moves down along the inside of the housing, it rotates with the cooperation of the positioning assembly, and drives several cleaning components on the outside to rotate along the top of the housing. Several resistance-reducing balls are embedded in the top of the contact head.

[0008] Furthermore, the contact head includes an abutment rod that is movably sleeved inside the housing. The bottom of the abutment rod extends into the interior of the mounting cavity and has a buffer cavity. The inner wall of the buffer cavity is connected with a guide thread.

[0009] Furthermore, a linkage shaft is movably sleeved at the lower end of the outer surface of the abutment rod, and the upper ends of several guide mechanisms are hinged to the linkage shaft. A linkage ring is fixedly sleeved inside the linkage shaft, and the linkage ring is movably embedded in the outer surface of the abutment rod.

[0010] Furthermore, the cleaning component includes a connector disposed on the outside of the contact rod, a dust removal plate fixedly connected to the side of the connector away from the contact rod, the dust removal plate having an arc surface structure; a linkage slider fixedly connected to the other side of the connector, a linkage groove being formed on the outer surface of the contact rod, the linkage slider being slidably engaged inside the linkage groove.

[0011] Furthermore, the positioning component includes a positioning rod fixedly installed at the bottom of the mounting cavity. The top of the positioning rod has a storage groove, and a positioning spring is provided inside the storage groove. The upper end of the positioning spring passes through the storage groove and extends into the interior of the buffer cavity. The upper end of the positioning spring abuts against and is connected to the top of the buffer cavity.

[0012] Furthermore, the outer surface of the positioning rod is provided with a guide groove, the outer surface of the guide thread and the inner wall of the guide groove are both smooth, and the guide thread is slidably connected to the inside of the guide groove.

[0013] Furthermore, the guiding mechanism consists of a contact block, a linkage block, a linkage rod, and several limiting sliders that are slidably engaged with the top and bottom of the contact block and fixedly connected to the top and bottom of the mounting cavity; one side of the contact block is in contact with the inner wall of the signal processing unit, the other end of the contact block is fixedly connected to the linkage block, the other end of the linkage block is movably hinged to the linkage rod, and the other end of the linkage rod is movably hinged to the linkage shaft.

[0014] Furthermore, the signal processing unit is connected to a transmission line extending to the outside of the housing, and a mounting base is installed at the bottom of the housing. The mounting base includes, but is not limited to, a suction cup, a magnetic block, and a bolt seat structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] Due to the positioning component, this invention, in conjunction with the drag-reducing ball bearings, allows the contact head to rotate rapidly when the device presses against it via the ball bearings. This rotation, in turn, drives several connectors and dust removal plates to rotate rapidly along the top of the housing, thanks to the linkage groove and slider. Consequently, the dust on the top of the housing is quickly pushed out of the housing by the arc surface of the dust removal plate, thus moving it away from the gap between the contact head and the housing.

[0017] By incorporating linkage rods and other components, this invention allows the axially pressing abutment rod to transfer force laterally and apply it to the signal processing unit. This reduces the need for the signal processing unit below the axially pressing abutment rod, effectively reducing the overall thickness of the housing and making it suitable for use in confined spaces. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 This is a front view of the present invention;

[0021] Figure 4 This is a sectional view of the front of the present invention;

[0022] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0023] In the diagram: 1. Housing; 2. Contact assembly; 21. Contact head; 211. Abutment rod; 212. Buffer cavity; 213. Guide thread; 22. Positioning assembly; 221. Positioning rod; 222. Storage groove; 223. Positioning spring; 224. Guide groove; 23. Resistance reducing ball; 24. Linkage shaft; 25. Linkage ring; 3. Cleaning assembly; 31. Dust removal plate; 32. Connector; 33. Linkage slide; 34. Linkage slider; 4. Mounting cavity; 5. Signal processing unit; 6. Transmission line; 7. Contact pressure block; 8. Limit slider; 9. Linkage block; 10. Linkage rod; 11. Mounting base. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 5 As shown, this utility model provides a flat pressure sensor for confined spaces, including a housing 1. The housing 1 has an internal mounting cavity 4. A signal processing unit 5 is sleeved on the outer edge of the inner cavity of the mounting cavity 4. A plurality of evenly distributed guide mechanisms are slidably engaged inside the mounting cavity 4. A contact component 2 is sleeved on the top of the housing 1. The lower end of the contact component 2 extends into the interior of the mounting cavity 4 and is movably connected to the upper end of the guide mechanism. The other end of the guide mechanism abuts against the inner wall of the signal processing unit 5. A plurality of evenly distributed cleaning components 3 are connected to the outer side of the upper end of the contact component 2. The bottom of the cleaning component 3 is attached to the top of the housing 1, and the outer end of the cleaning component 3 extends to the outer edge of the housing 1.

[0026] The contact component 2 includes a contact head 21 that is movably sleeved in the middle of the housing 1. A positioning component 22 is sleeved on the lower end of the contact head 21. The lower end of the positioning component 22 is fixedly connected to the inside of the mounting cavity 4. When the contact head 21 moves down along the inside of the housing 1, it rotates with the cooperation of the positioning component 22, and drives several cleaning components 3 on the outside to rotate along the top of the housing 1. Several resistance-reducing balls 23 are embedded in the top of the contact head 21.

[0027] Due to the setting of the resistance-reducing ball 23, the frictional resistance between the two can be reduced when the equipment presses the abutment rod 211. Then, with the cooperation of the guide groove 224 and the guide thread 213, when the equipment pushes the abutment rod 211 down, the abutment rod 211 can be rotated smoothly.

[0028] The contact head 21 includes an abutment rod 211 that is movably sleeved inside the housing 1. The bottom of the abutment rod 211 extends into the interior of the mounting cavity 4 and has a buffer cavity 212. The inner wall of the buffer cavity 212 is connected with a guide thread 213.

[0029] Among them, the lower end of the outer surface of the abutment rod 211 is movably sleeved with the linkage shaft 24, the upper end of several guide mechanisms is hinged to the linkage shaft 24, and the linkage shaft 24 is fixedly sleeved with a linkage ring 25, which is movably embedded in the outer surface of the abutment rod 211.

[0030] Because of the linkage ring 25, it can be ensured that when the contact head 21 moves up and down, the linkage shaft 24 can be driven to move up and down through the linkage ring 25, thereby driving the contact pressure block 7 to reciprocate through the linkage rod 10; and when the contact head 21 rotates with the cooperation of the positioning component 22, it can also prevent the linkage shaft 24 from rotating and twisting the linkage rod 10, etc., with the cooperation of the linkage ring 25, thereby ensuring the stability of the reciprocating movement of the linkage rod 10, etc.

[0031] The cleaning component 3 includes a connector 32 located on the outside of the contact rod 211. A dust removal plate 31 is fixedly connected to the side of the connector 32 away from the contact rod 211. The dust removal plate 31 has an arc surface structure. A linkage slider 34 is fixedly connected to the other side of the connector 32. A linkage groove 33 is provided on the outer surface of the contact rod 211. The linkage slider 34 is slidably engaged inside the linkage groove 33.

[0032] With the cooperation of the drag-reducing ball bearing 23, when the device presses the contact head 21 through the drag-reducing ball bearing 23, the contact head 21 can be rotated rapidly with the cooperation of the positioning component 22. Then, with the cooperation of the linkage slide groove 33 and the linkage slider 34, several connectors 32 and dust removal plate 31 are driven to rotate rapidly along the top of the housing 1. Thus, under the action of the arc surface of the dust removal plate 31, the dust on the top of the housing 1 is quickly pushed to the outside of the housing 1, away from the gap between the contact head 21 and the housing 1.

[0033] The positioning component 22 includes a positioning rod 221 fixedly installed at the bottom of the inner cavity of the mounting cavity 4. The top of the positioning rod 221 is provided with a storage groove 222. A positioning spring 223 is provided inside the storage groove 222. The upper end of the positioning spring 223 passes through the storage groove 222 and extends into the inner cavity of the buffer cavity 212. The upper end of the positioning spring 223 is abutted and connected to the top of the inner cavity of the buffer cavity 212.

[0034] The outer surface of the positioning rod 221 is provided with a guide groove 224, the outer surface of the guide thread 213 and the inner wall of the guide groove 224 are both smooth, and the guide thread 213 is slidably connected to the inside of the guide groove 224.

[0035] Due to the guide groove 224 and guide thread 213, the axially sliding abutment rod 211 can rotate under the restriction of the fixed positioning rod 221, thereby driving the cleaning component 3 to rotate and clean the dust on the top of the housing 1, so as to prevent dust from approaching and entering the mounting cavity 4 through the gap between the abutment rod 211 and the housing 1.

[0036] The guiding mechanism consists of a contact block 7, a linkage block 9, a linkage rod 10, and several limiting sliders 8 that are slidably engaged with the top and bottom of the contact block 7 and fixedly connected to the top and bottom of the inner cavity of the mounting cavity 4. One side of the contact block 7 is in contact with the inner wall of the signal processing unit 5, the other end of the contact block 7 is fixedly connected to the linkage block 9, the other end of the linkage block 9 is movably hinged to the linkage rod 10, and the other end of the linkage rod 10 is movably hinged to the linkage shaft 24.

[0037] By setting the linkage rod 10, the axially pressing abutment rod 211 can transfer the force to the lateral direction and apply it to the signal processing unit 5, thereby reducing the original situation of axially pressing the signal processing unit 5 below the abutment rod 211, effectively reducing the overall thickness of the housing 1, making it suitable for narrow spaces.

[0038] The signal processing unit 5 is connected to a transmission line 6 extending to the outside of the housing 1. The bottom of the housing 1 is equipped with a mounting base 11, which includes, but is not limited to, a suction cup, a magnetic block and a bolt seat structure.

[0039] Because of the mounting base 11, staff can easily select a suitable mounting base 11 in advance according to the installation environment, such as a suction cup, magnetic suction cup or bolt seat, so as to facilitate the installation and disassembly of the housing 1 and the mounting base 11 as much as possible.

[0040] Working principle and usage process of this utility model:

[0041] As shown in the figure, select a suitable mounting base 11 according to the actual situation and connect it to the bottom of the housing 1. Then, install the housing 1, contact component 2 and cleaning component 3 onto the device to be monitored through the mounting base 11.

[0042] When the device approaches and pushes the abutment rod 211 through the resistance-reducing ball 23, the abutment rod 211 can be moved down smoothly with the cooperation of the positioning rod 221 and the buffer cavity 212. It can also push the linkage shaft 24 down through the linkage ring 25 outside, thereby pushing the upper ends of several linkage rods 10 down. The movement of the upper end of the linkage rod 10 can be limited by the limiting slider 8, so that the lower end of the linkage rod 10 pushes the linkage block 9 and the contact pressure block 7 to slide smoothly along the radial direction inside the housing 1, and pushes the contact pressure block 7 to squeeze the signal processing unit 5, so that the signal processing unit 5 can sense the pressure intensity.

[0043] During the downward movement of the abutment rod 211 along the outside of the positioning rod 221, the positioning spring 223 can be compressed under the restriction of the receiving groove 222, and its elastic restoring force can be increased. Thus, when the top device of the resistance reducing ball 23 is removed, the abutment rod 211 can be moved upward and reset under the action of the elastic restoring force of the positioning spring 223. At the same time, the linkage rod 10 and the contact pressure block 7 are reset through the linkage ring 25 and the linkage shaft 24.

[0044] Meanwhile, under the restriction of the positioning rod 221, when the abutment rod 211 moves down, under the restriction of the housing 1, it slides against several connecting heads 32 on the outside. With the cooperation of the guide groove 224 and the guide thread 213, the continuously moving abutment rod 211 rotates. Then, with the cooperation of several linkage sliding grooves 33 on its outside and the linkage slider 34 on its inside, it drives several connecting heads 32 and dust removal plate 31 to rotate along the top of the housing 1. Since the dust removal plate 31 has an arc surface structure, when it rotates quickly, it can push the dust on the surface of the housing 1 to the outside of the housing 1, away from the abutment rod 211.

[0045] When the abutment rod 211 moves upward rapidly under the elastic restoring force of the positioning spring 223, due to the lack of restriction at the top of the dust removal plate 31, etc., under the friction of the inner wall of the linkage groove 33 and the outer surface of the linkage slider 34, several dust removal plates 31 and connectors 32 will move upward with the linkage slider 34 and the linkage groove 33 and the abutment rod 211 until the abutment rod 211 is reset. Then, under the gravity of several dust removal plates 31, connectors 32 and linkage sliders 34, it moves downward along the inner wall of the linkage groove 33 until it is in contact with the surface of the housing 1 again.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flat pressure sensor for use in confined spaces, comprising a housing (1), characterized in that: The housing (1) has an installation cavity (4) inside. A signal processing unit (5) is sleeved on the outer edge of the inner cavity of the installation cavity (4). A plurality of evenly distributed guide mechanisms are slidably engaged inside the installation cavity (4). A contact assembly (2) is sleeved on the top of the housing (1). The lower end of the contact assembly (2) extends into the interior of the installation cavity (4) and is movably connected to the upper end of the guide mechanism. The other end of the guide mechanism abuts against the inner wall of the signal processing unit (5). A plurality of evenly distributed cleaning components (3) are connected to the outer side of the upper end of the contact assembly (2). The bottom of the cleaning component (3) is attached to the top of the housing (1). The outer end of the cleaning component (3) extends to the outer edge of the housing (1). The contact assembly (2) includes a contact head (21) that is movably sleeved in the middle of the housing (1). The lower end of the contact head (21) is sleeved with a positioning assembly (22). The lower end of the positioning assembly (22) is fixedly connected to the inside of the mounting cavity (4). When the contact head (21) moves down along the inside of the housing (1), it rotates with the cooperation of the positioning assembly (22) and drives several cleaning assemblies (3) on the outside to rotate along the top of the housing (1). Several resistance-reducing balls (23) are embedded in the top of the contact head (21).

2. A flat pressure sensor for confined spaces according to claim 1, characterized in that: The contact head (21) includes an abutment rod (211) that is movably sleeved inside the housing (1). The bottom of the abutment rod (211) extends into the interior of the mounting cavity (4) and has a buffer cavity (212). The inner wall of the buffer cavity (212) is connected with a guide thread (213).

3. A flat pressure sensor for confined spaces according to claim 2, characterized in that: The lower end of the outer surface of the abutment rod (211) is movably sleeved with a linkage shaft (24), and the upper ends of several guide mechanisms are hinged to the linkage shaft (24). A linkage ring (25) is fixedly sleeved inside the linkage shaft (24), and the linkage ring (25) is movably embedded into the outer surface of the abutment rod (211).

4. A flat pressure sensor for confined spaces according to claim 2, characterized in that: The cleaning component (3) includes a connector (32) disposed on the outside of the contact rod (211). A dust removal plate (31) is fixedly connected to the side of the connector (32) away from the contact rod (211). The dust removal plate (31) has an arc surface structure. A linkage slider (34) is fixedly connected to the other side of the connector (32). A linkage groove (33) is opened on the outer surface of the contact rod (211). The linkage slider (34) is slidably engaged in the interior of the linkage groove (33).

5. A flat pressure sensor for confined spaces according to claim 2, characterized in that: The positioning component (22) includes a positioning rod (221) fixedly installed at the bottom of the inner cavity of the mounting cavity (4). The top of the positioning rod (221) is provided with a storage groove (222). A positioning spring (223) is provided inside the storage groove (222). The upper end of the positioning spring (223) passes through the storage groove (222) and extends into the inner cavity of the buffer cavity (212). The upper end of the positioning spring (223) is abutted and connected to the top of the inner cavity of the buffer cavity (212).

6. A flat pressure sensor for confined spaces according to claim 5, characterized in that: The outer surface of the positioning rod (221) is provided with a guide groove (224), the outer surface of the guide thread (213) and the inner wall of the guide groove (224) are both smooth, and the guide thread (213) is slidably connected to the inside of the guide groove (224).

7. A flat pressure sensor for confined spaces according to claim 3, characterized in that: The guiding mechanism consists of a contact block (7), a linkage block (9), and a linkage rod (10), as well as several limiting sliders (8) that are slidably engaged with the top and bottom of the contact block (7) and fixedly connected to the top and bottom of the inner cavity of the mounting cavity (4). One side of the contact block (7) is in contact with the inner wall of the signal processing unit (5), the other end of the contact block (7) is fixedly connected to the linkage block (9), the other end of the linkage block (9) is movably hinged to the linkage rod (10), and the other end of the linkage rod (10) is movably hinged to the linkage shaft (24).

8. A flat pressure sensor for confined spaces according to claim 1, characterized in that: The signal processing unit (5) is connected to a transmission line (6) extending to the outside of the housing (1). The bottom of the housing (1) is equipped with a mounting base (11), which includes, but is not limited to, a suction cup, a magnetic block and a bolt seat structure.

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