Limb motor function measuring instrument for mice and rats

Abstract

The present invention relates to the technical field of animal physiological function detection, and specifically discloses a rat limb motor function measuring instrument, including a dynamometer assembly, an adjustment mechanism is arranged on the front of the dynamometer assembly, and a testing mechanism is arranged on the other end of the adjustment mechanism; the adjustment mechanism includes a connector, a connecting column is fixedly installed at the end of the connector, the end of the connecting column is fixedly connected to the testing mechanism, a synchronous column is fixedly installed on the side of the connector, the end of the synchronous column is fixedly connected to a synchronous gear ring, the end of the synchronous gear ring is transmission-connected to a driving gear, and the shaft end of the driving gear is transmission-connected to a driving motor through a transmission member; the testing mechanism includes a gripping net, a plurality of grids are arranged on the gripping net, and the gripping net and the connecting column are at an angle of forty-five degrees; the dynamometer assembly includes a dynamometer body, and a tension head for testing tension is arranged on the front of the dynamometer body. The present invention has comprehensive functions, and can test both the gripping strength of the forelimbs of mice and the gripping strength of the hindlimbs.

Description

Technical Field

[0001] The invention relates to the technical field of animal physiological function detection, and in particular to an instrument for measuring the limb motor function of mice and rats. Background Art

[0002] When measuring the motor function of mice and rats (such as the grip strength of forelimbs and hindlimbs), relevant functional measuring instruments are needed to carry out the measurement.

[0003] However, most of the existing functional measuring instruments can only measure the grip strength of the forelimbs of mice and rats, while the instruments for detecting the grip strength of the hind limbs are blank, resulting in incomplete measurement of the limb functions. For example, Chinese patent publication No. CN211131112U discloses a mouse grip strength measuring instrument, which includes a measuring instrument body and a grip plate, a grip plate is fixedly installed on the front of the measuring instrument body, and two slide rails are fixedly installed on the front of the measuring instrument body and are located on the right side of the grip plate. This is the mouse grip strength measuring instrument. By setting a first clamping plate and a second clamping plate, when the front side of the first clamping plate and the front side of the second clamping plate are pressed at the same time, the first clamping plate and the second clamping plate respectively rotate along the rotating shaft inside the first support rod, and the first clamping plate drives the second pressure block to move away from the first pressure block, and the mouse tail is placed on the first pressure block. The clamping plate and the second clamping plate are released to clamp the mouse, and the slider is pushed to the left. When the slider is released, the tension spring connected to the slider contracts, driving the clamped mouse to move to the right, simulating the situation when measuring the gripping force of an external mouse, thereby achieving the purpose of easy operation.

[0004] Although the above-mentioned patent disclosure can effectively measure the gripping force of mice, it can only measure the gripping force of the mouse's forelimbs, and the measurement of the hind limbs is still not possible. Summary of the invention

[0005] In order to solve the above technical problems existing in the existing measurement of the gripping strength of mice, the present invention provides a rat limb motor function measuring instrument which has comprehensive functions and can test both the gripping strength of the forelimbs and the gripping strength of the hind limbs of mice.

[0006] The technical solution of the present invention is as follows: a rat and mouse limb motor function measuring instrument comprises a dynamometer assembly, an adjusting mechanism is arranged on the front of the dynamometer assembly, and a testing mechanism is arranged on the other end of the adjusting mechanism; the adjusting mechanism comprises a connecting head, the connecting head is rotatably connected to the dynamometer assembly, a connecting column is fixedly installed on the end of the connecting head, the end of the connecting column is fixedly connected to the testing mechanism, a synchronous column is fixedly installed on the side of the connecting head, the end of the synchronous column is fixedly connected to a synchronous gear ring, the end of the synchronous gear ring is transmission-connected to a driving gear, the shaft end of the driving gear is transmission-connected to a driving motor through a transmission member, and the driving motor is fixedly connected to the dynamometer assembly; the testing mechanism comprises a gripping net, the gripping net is fixedly connected to the connecting column, a plurality of grids are arranged on the gripping net, and the gripping net and the connecting column form an angle of forty-five degrees; the dynamometer assembly comprises a dynamometer body, and a tension head for testing tension is arranged on the front of the dynamometer body. The adjusting mechanism in the present invention is connected to the tensile gauge assembly through a connecting head, and is connected to the testing mechanism through a connecting column. The driving motor is used to drive the driving gear to rotate, thereby driving the synchronous gear ring to rotate. When the synchronous gear ring rotates, the connecting head can be driven to rotate synchronously through the synchronous column, so that the testing mechanism is flipped 180 degrees. The grasping net in the present invention is used for the grasping test of mice. There are many holes on the surface of the grasping net, which can facilitate the grasping of mice. The grasping net and the connecting column are at an angle of 45 degrees, so as to analyze the grasping force of the mice later. During the test, the hind limbs and forelimbs of the mouse are in contact with the grasping net respectively at first. When the hind limbs or forelimbs of the mouse grasp the grasping net, the initial supporting force on the mouse is released, so that the hind limbs or forelimbs of the mouse grasp the grasping net, thereby achieving a force measurement effect; the structural setting in the present invention has a relatively comprehensive functional effect of testing both the grip strength of the mouse's forelimbs and the grip strength of the hind limbs; the main body of the dynamometer in the present invention is an existing testing instrument with a blue color, and various buttons and a display screen are arranged on the surface. The display screen will display the real-time tested tension value, and the surrounding areas are rounded corners. The tension head is a matching component of the dynamometer main body. When the tension head is pulled, the corresponding tension value will be displayed on the display screen of the dynamometer main body.

[0007] Preferably, a horizontal pointing protrusion is provided on the surface of the connector, and the horizontal pointing protrusion is used to assist in observing whether the position of the gripping net is horizontal.

[0008] Preferably, the plurality of grids are evenly distributed on the surface of the gripping net, and the gripping net is rectangular in shape. The even distribution of the plurality of grids facilitates the mouse to grip more conveniently; the rectangular gripping net is easy to manufacture and is also for the better gripping of the mouse.

[0009] Preferably, the dynamometer body has rounded corners all around, which is more aesthetically pleasing and can also prevent the operator from being scratched by the edges and corners and causing discomfort.

[0010] Preferably, a support structure is provided on the bottom side of the tension head, which can provide good support for the tension head and can be adjusted as required to meet support requirements in different situations.

[0011] Preferably, the support structure includes a support half ring, which is slidably mounted on the bottom end of the tension head, a triangular support frame is fixedly mounted on the bottom end of the support half ring, the side of the triangular support frame is fixedly connected to the main body of the tension meter, auxiliary support half rings are arranged on both sides of the support half ring, a synchronous sleeve is fixedly mounted on one side adjacent to the auxiliary support half ring, an adjustment threaded column is threadedly mounted on one side adjacent to the synchronous sleeve, the adjustment threaded column is rotatably connected to the triangular support frame, and an adjustment rod is fixedly mounted on the outer surface of one side of the adjustment threaded column close to the triangular support frame. The support half ring is used to provide preliminary support to the tension head, and the auxiliary support half ring is used to provide further auxiliary support on both sides of the support half ring. By turning the adjustment rod, the adjustment threaded column can be driven to rotate, thereby adjusting the position of the auxiliary support half ring to meet the support requirements in different situations.

[0012] Preferably, sleeve rods are fixedly mounted on adjacent sides of the synchronization sleeve, and ends of the sleeve rods are fixedly connected to the side walls of the triangular support frame.

[0013] Preferably, the connecting head includes a mounting head, the mounting head is fixedly connected to the tension head, the horizontally pointing protrusion is arranged on the outer surface of the mounting head, and telescopic columns are fixedly installed on both sides of one end of the mounting head close to the tension gauge body, and a stabilizing mechanism is arranged on the other end of the telescopic column. The mounting head and telescopic column fixedly installed at the tension head are used to ensure the stability of the tension head when it moves under the action of tension, and the telescopic column is connected to the tension gauge body through the stabilizing mechanism, so as to ensure the overall stability, and also ensure that the tension head can rotate with the mounting head, so as to realize the flipping of the test mechanism.

[0014] Preferably, the mounting head is cylindrical in shape.

[0015] Preferably, the stabilizing mechanism comprises a stabilizing ring, which is arranged outside the connecting head, one end of which is fixedly connected to the telescopic column, and the other end of which is rotatably connected to the main body of the tensile gauge. The telescopic column is connected to the main body of the tensile gauge through the stabilizing ring, thereby ensuring the overall stability and also ensuring that the tensile head can rotate with the mounting head, thereby realizing the flipping of the test mechanism.

[0016] Preferably, a matching annular groove is provided at the contact point between the dynamometer body and the stabilizing ring, and the dynamometer body is rotatably connected to the stabilizing ring through the annular groove. The stabilizing ring is flexibly rotatably connected in the annular groove, thereby better achieving the stability of the dynamometer body.

[0017] Preferably, the transmission member comprises a telescopic rod, one end of which is fixedly connected to the driving gear, the other end of which is fixedly connected to the driving motor, a stabilizing member is movably mounted on the side of the extended end of the telescopic rod, a synchronizing ring is fixedly connected to the end of the stabilizing member, a connecting ring is built into the synchronizing ring, and the synchronizing ring is movably mounted on the outer surface of the connector. The arrangement of the telescopic rod enables the driving gear to move synchronously with the displacement of the tension head, thereby ensuring that the driving gear and the synchronizing gear ring are always in a state of meshing transmission; the telescopic rod is connected to the synchronizing ring through the stabilizing member, so that when the connector is displaced under the action of the tension head, the stabilizing member can drive the telescopic rod to move synchronously, thereby ensuring that the driving gear and the synchronizing gear ring are always in a state of meshing transmission, and the flexibly connected state of the synchronizing ring and the connector ensures that the synchronizing ring will not interfere with the normal rotation of the connector while ensuring that the telescopic rod can be synchronously extended and retracted.

[0018] Preferably, the stabilizing member includes a connecting block, the connecting block is fixedly connected to the synchronization ring, a clamping sleeve is fixedly connected to the end of the connecting block, a clamping ring is built in the clamping sleeve, and the clamping sleeve is rotatably connected to the extended end of the telescopic rod. The stabilizing member includes a clamping sleeve clamped to the extended end of the telescopic rod, the clamping sleeve can rotate relative to the extended end of the telescopic rod, but will not move relative to the extended end of the telescopic rod, and the other end of the clamping sleeve is fixedly connected to the connecting block, and the connecting block is used to fix the clamping sleeve to the synchronization ring.

[0019] Preferably, the clamping sleeve is a hollow structure, which can better realize rotational connection with the extended end of the telescopic rod.

[0020] Preferably, a matching slot is provided at the contact point between the extended end of the telescopic rod and the clamping sleeve, so that the slot and the clamping sleeve can cooperate well, thereby better realizing the rotation function.

[0021] Preferably, a lifting mechanism for placing a mouse is provided at the bottom of the gripping net, and the lifting mechanism is used to place the mouse, so that the mouse is initially lifted up to grip the gripping net, and then the support for the mouse is removed, so as to detect the gripping force of the mouse.

[0022] Preferably, the lifting mechanism comprises a lifting plate, which is arranged at the bottom of the gripping net, and a telescopic cylinder is fixedly installed at the bottom of the lifting plate. The lifting plate is used to initially place the mouse, and the telescopic cylinder is used to lift the lifting plate. When the mouse grabs the gripping net, the telescopic cylinder drives the lifting plate to descend, so that the lifting plate loses support for the mouse.

[0023] Preferably, a buffer mechanism for buffering the mouse is provided at the top of the lifting plate, and the buffer mechanism is used to make the mouse comfortable before the test so as to better cooperate with the test.

[0024] Preferably, the buffer mechanism comprises a silicone pad, on which a plurality of protrusions are provided, the silicone pad is arranged on the top surface of the lifting plate, and the silicone pad is bonded to the lifting plate. The protrusions can stimulate the mouse so that the mouse's limbs can tightly grasp the gripping net. The silicone pad is used to ensure the comfort of the lifting plate when it is placed on the mouse, so as to prevent the mouse from being too nervous and not cooperating with the test; the protrusions can stimulate the mouse so that the mouse's limbs can tightly grasp the gripping net.

[0025] Preferably, a stabilizing structure is provided at the bottom end of the lifting plate, and the stabilizing structure is used to ensure the stability of the lifting plate when it moves up and down.

[0026] Preferably, the stabilizing structure includes sleeve rods, which are fixedly mounted on both sides of the bottom of the lifting plate, and the ends of the sleeve rods are fixedly connected to the supporting mechanism. The sleeve rods are provided to ensure the stability of the lifting plate when it moves, and also play a certain role in limiting the lifting plate.

[0027] Preferably, a supporting mechanism for supporting the lifting mechanism is disposed at the bottom end of the lifting mechanism, and the supporting mechanism is used to support the lifting mechanism and the dynamometer assembly, thereby ensuring the stability of the lifting mechanism.

[0028] Preferably, the support mechanism comprises a support base, the support base is fixedly mounted on the bottom end of the lifting mechanism, a support column is fixedly mounted on the top side of the support base, and the end of the support column is fixedly connected to the dynamometer assembly. The support base is used to support the lifting mechanism, and the support column is used to support the dynamometer assembly.

[0029] Preferably, a retractable protective mechanism is provided on the bottom side of the support column, and the protective mechanism is used to protect the support column.

[0030] Preferably, the protection mechanism includes a protection ring, which is fixedly mounted on the outer surface of the support column, and retractable protection rods are hinged on both sides of the bottom end of the protection ring, and triangular sliding seats are hinged on the ends of the protection rods, and the ends of the sliding seats are slidably connected to the support base, and limiting bolts are threadedly mounted on both sides of the top of the sliding seat, and the ends of the limiting bolts are provided with anti-slip patterns, and the outer side of the protection rod is bonded with protective materials. By providing a triangular sliding seat, the contact area between the sliding seat and the support base can be reduced, thereby ensuring the convenience of adjusting the sliding seat; a bolt hole that matches the limiting bolt is provided at the top of the support base, so as to facilitate the limiting of the protection rod after adjusting its position relative to the protection ring; the protective material is used to protect the outer side of the protection rod, so as to prevent the support column from being damaged.

[0031] Preferably, the protective material is surrounded by a conical extension structure. The conical extension structure and the extension of the protective material can cooperate with the protective rod to better protect the support column.

[0032] Preferably, the bottom end of the support mechanism is provided with an anti-skid mechanism for ensuring the overall stability of the support mechanism. The anti-skid mechanism is used to ensure the anti-skid property and stability of the support mechanism during support.

[0033] Preferably, the anti-skid mechanism comprises an anti-skid pad, which is arranged at the bottom end of the support mechanism and is bonded to the bottom side wall of the support mechanism. The anti-skid pad can well ensure the anti-skid property and stability of the support mechanism during support.

[0034] Preferably, an anti-falling mechanism is provided at the bonding point between the anti-skid pad and the support mechanism, and the anti-falling mechanism can effectively prevent the anti-skid pad from falling off from the bonding point between the anti-skid pad and the support mechanism.

[0035] Preferably, the anti-falling mechanism comprises a support seat, the support seat is fixedly mounted on the top of the support base, an adjusting bolt is threadedly mounted in the middle of the support seat, a wavy limiting anti-falling strip is fixedly mounted on the bottom end of the adjusting bolt, a polygonal adjusting block is fixedly mounted on the top end of the adjusting bolt, a sleeve column is fixedly mounted on the top end of the limiting anti-falling strip, and the end of the sleeve column is fixedly connected to the support seat. By setting the limiting anti-falling strip to be wavy, the contact area between the limiting anti-falling strip and the anti-skid pad is increased, thereby ensuring the stability of the limit, thereby preventing the anti-skid pad from falling off the bottom side of the support mechanism; the position of the limiting anti-falling strip relative to the support base can be adjusted by rotating the adjusting block, thereby facilitating the bonding of the anti-skid pad to the bottom side of the support mechanism, and the purpose of setting the adjusting block to be polygonal is to increase the contact area between the user and the adjusting block, thereby ensuring that the user can smoothly rotate the adjusting block.

[0036] Preferably, the support mechanism is connected to the dynamometer assembly via a mounting mechanism, and the mounting mechanism can conveniently and stably realize the installation of the dynamometer assembly on the support mechanism.

[0037] Preferably, the mounting mechanism includes a mounting plate, the mounting plate is fixedly mounted on the bottom end of the dynamometer assembly, a connecting plate is provided at the bottom end of the mounting plate, the connecting plate is fixedly connected to the support mechanism, mounting columns are fixedly mounted on both sides of the bottom end of the mounting plate, mounting holes matching the mounting columns are provided on both sides of the top end of the connecting plate, a pressing column is movably mounted inside the mounting hole, the pressing column passes through the inner bottom wall of the mounting hole, a linkage plate is fixedly connected to the pressing column, a spring column is fixedly mounted on the top end of the linkage plate, and the end of the spring column is fixedly connected to the inner bottom wall of the connecting plate. The connection between the dynamometer assembly and the support column is achieved through the mounting mechanism. When installing the dynamometer assembly, the mounting columns on both sides of the bottom end of the mounting plate are aligned with the mounting holes at the connecting plate for plugging, and the pressing column will move downward due to the pressure of the mounting column, thereby driving the linkage plate to move downward.

[0038] Preferably, a limiting mechanism is fixedly mounted on the top side of the linkage plate.

[0039] Preferably, the limiting mechanism includes a limiting column, which is fixedly connected to the linkage plate, a spring rod is fixedly installed on the side of the limiting column close to the mounting hole, the end of the spring rod is fixedly connected to the limiting wedge block, a through groove is provided on the side of the mounting hole close to the limiting wedge block, and a limiting groove matching the limiting wedge block is provided on the side of the mounting column. The limiting column at the limiting mechanism moves downward accordingly. When the limiting column moves to the position corresponding to the limiting wedge block and the through slot, the installation column has also moved to the state corresponding to the limiting slot and the through slot. At this time, under the action of the spring rod, the limiting wedge block will move toward the limiting slot through the through slot and fully contact with the limiting slot, thereby completing the connection limit between the dynamometer assembly and the support column; when the dynamometer assembly needs to be removed later, since the wavy surface of the limiting wedge block is facing downward, the dynamometer assembly can be pulled upward to apply a certain force to the limiting wedge block, thereby driving the limiting wedge block to move in the direction away from the limiting slot, thereby releasing the limiting relationship between the two, thereby removing the dynamometer assembly from the support column. Subsequently, under the action of the spring column, the pressing column will also be reset, which is convenient for the subsequent re-installation of the limit.

[0040] The present invention has the following beneficial effects:

[0041] (1) The adjustment mechanism is connected to the tensile gauge assembly through a connector, and is connected to the test mechanism through a connector column. The drive motor is used to drive the drive gear to rotate, thereby driving the synchronous gear ring to rotate. When the synchronous gear ring rotates, the connector can be driven to rotate synchronously through the synchronous column, so that the test mechanism can be flipped 180 degrees;

[0042] (2) The grasping net is used for the grasping test of mice. There are many holes on the surface of the grasping net, which can facilitate the grasping of mice. The grasping net and the connecting column are at a 45-degree angle to facilitate the subsequent analysis of the grasping force of the mice. During the test, the mouse's hind limbs and forelimbs are in contact with the grasping net respectively at first. When the mouse's hind limbs or forelimbs grasp the grasping net, the initial support force on the mouse is released, so that the mouse's hind limbs or forelimbs grasp the grasping net, thereby achieving a force measurement effect; it has a relatively comprehensive functional effect of testing both the mouse's forelimb grip strength and the hind limb grip strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the structure of the present invention;

[0044] Figure 2 It is a schematic side view of the structure of the present invention;

[0045] Figure 3 This is a schematic diagram of the hind paw test state of the present invention;

[0046] Figure 4 This is a schematic diagram of the structure of the gripping net of the present invention;

[0047] Figure 5 A schematic diagram of the structure of the dynamometer assembly of the present invention;

[0048] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at center A;

[0049] Figure 7 This is a schematic diagram of the stabilizing ring structure of the present invention;

[0050] Figure 8 It is a schematic diagram of force analysis of the gripping net under the test state of the present invention;

[0051] Fig. 9 It is a schematic diagram of the structure of the stabilizing member of the present invention;

[0052] Fig.10 This is a schematic diagram of the matching structure of the ferrule and the extended end of the telescopic rod of the present invention;

[0053] Fig.11 This is a schematic diagram of the disassembled state of the installation mechanism of the present invention;

[0054] Fig.12 This is a schematic diagram of the installation state of the installation mechanism of the present invention;

[0055] Fig.13 It is a schematic diagram of the supporting mechanism structure of the present invention;

[0056] Fig.14 It is a schematic diagram of the structure of the anti-falling mechanism of the present invention.

[0057] The marks in the attached drawings are: 100-tensile gauge assembly; 101-tensile gauge body; 1011-tensile head; 200-adjusting mechanism; 201-connecting column; 2011-synchronizing column; 2012-synchronizing gear ring; 2013-driving gear; 2014-driving motor; 2015-mounting head; 2016-telescopic column; 2017-stabilizing ring; 2018-telescopic rod; 2019-stabilizing member; 2020-synchronizing ring; 2021-connecting block; 2022-card sleeve; 300-testing mechanism; 301-gripping net; 3011-lifting plate; 3012-telescopic cylinder; 3013-support base; 3014-sleeve connecting rod; 3015-support column; 3016-silicone cushion; 400-mounting mechanism; 401-mounting plate; 40 2-connecting plate; 403-installing column; 404-installing hole; 405-pressing column; 406-linkage plate; 407-spring column; 408-limiting mechanism; 409-limiting column; 410-spring rod; 411-limiting wedge; 500-support structure; 501-support half ring; 502-triangular support frame; 503-auxiliary support half ring; 504-synchronizing sleeve; 505-adjusting threaded column; 506-adjusting rod; 507-sleeve rod; 600-protective mechanism; 601-protective ring; 602-protective rod; 603-sliding seat; 604-limiting bolt; 605-extension protection material; 700-anti-falling mechanism; 701-support seat; 702-adjusting bolt; 703-limiting anti-falling strip; 704-adjusting block; 705-sleeve column. DETAILED DESCRIPTION

[0058] The present invention is further described below in conjunction with the embodiments and drawings, but they are not intended to limit the present invention.

[0059] like Figure 1 The limb motor function measuring instrument for rats and mice shown in the figure includes: Figure 2 and Figure 3 The tensile gauge assembly 100 shown in FIG. 1 has an adjustment mechanism 200 disposed on the front side of the tensile gauge assembly 100 and a Figure 5 A test setup 300 is shown.

[0060] The adjusting mechanism 200 includes a connecting head with a horizontally pointing protrusion on its surface which is rotatably connected to the dynamometer assembly 100, a connecting column 201 is fixedly installed on the other end of the connecting head, the other end of the connecting column 201 is fixedly connected to the testing mechanism 300, a synchronous column 2011 is fixedly installed on the side of the connecting head, the other end of the synchronous column 2011 is fixedly connected to a synchronous gear ring 2012, the other end of the synchronous gear ring 2012 is transmission-connected to a driving gear 2013, the shaft end of the driving gear 2013 is transmission-connected to a driving motor 2014 through a transmission member, and the driving motor 2014 is fixedly connected to the dynamometer assembly 100.

[0061] The adjustment mechanism 200 is connected to the dynamometer assembly 100 via a connector, and is connected to the test mechanism 300 via a connecting column 201. The drive motor 2014 is used to drive the drive gear 2013 to rotate, thereby driving the synchronous gear ring 2012 to rotate, so that the test mechanism 300 flips 180 degrees.

[0062] The driving motor 2014 has been debugged in advance and can realize a 180-degree flip of the testing mechanism 300 .

[0063] The testing mechanism 300 includes a Figure 4 The rectangular gripping net 301 shown has multiple grids, and the grids are evenly distributed on the surface of the gripping net 301. The bottom end of the gripping net 301 is provided with a lifting mechanism for placing the mouse, and the bottom end of the lifting mechanism is provided with a supporting mechanism for supporting it, and the bottom end of the supporting mechanism is provided with an anti-slip mechanism for ensuring the overall stability of the supporting mechanism.

[0064] The gripping net 301 is used for the gripping test of mice. There are many holes on the surface, which can facilitate the gripping of mice. The gripping net 301 and the connecting column 201 are at a forty-five degree angle to facilitate the subsequent analysis of the gripping force of the mice. During the test, the mouse is located on the lifting mechanism, and the hind limbs and forelimbs are in contact with the gripping net 301 and the lifting mechanism respectively. When the hind limbs or forelimbs of the mouse grasp the gripping net 301, the lifting mechanism can be lowered and leave the mouse, so that the hind limbs or forelimbs of the mouse grasp the gripping net 301, thereby achieving a force measurement effect.

[0065] The supporting mechanism is used to support the lifting mechanism and the dynamometer assembly 100 , so as to ensure the stability of the lifting mechanism.

[0066] The anti-skid mechanism is used to ensure the anti-skid property and stability of the supporting mechanism during support.

[0067] The supporting mechanism is connected to the dynamometer assembly 100 via the mounting mechanism 400 .

[0068] The tension gauge assembly 100 includes a tension gauge body 101 with rounded corners on all sides. A tension head 1011 for testing tension is disposed on the front of the tension gauge body 101. Fig.13 A support structure 500 is shown.

[0069] The support structure 500 includes a support semi-ring 501 slidably mounted on the bottom end of the tension head 1011, a triangular support frame 502 is fixedly mounted on the bottom end of the support semi-ring 501, the other side of the triangular support frame 502 is fixedly connected to the tension meter body 101, auxiliary support semi-rings 503 are arranged on both sides of the support semi-ring 501, a synchronous sleeve 504 is fixedly mounted on one side adjacent to the auxiliary support semi-ring 503, an adjusting threaded column 505 is threadedly mounted on one side adjacent to the synchronous sleeve 504, the adjusting threaded column 505 is rotatably connected to the triangular support frame 502, and an adjusting rod 506 is fixedly mounted on the outer surface of one side of the adjusting threaded column 505 close to the triangular support frame 502;

[0070] A sleeve rod 507 is fixedly installed on one adjacent side of the synchronous sleeve 504 , and the other end of the sleeve rod 507 is fixedly connected to the side wall of the triangular support frame 502 .

[0071] The dynamometer body 101 is an existing testing instrument in blue color, with various buttons and display screens on the surface. The display screen will display the real-time test tension value. The dynamometer body 101 has rounded corners. The tension head 1011 is a matching component of the dynamometer body 101. When the tension head 1011 is pulled, the corresponding tension value will be displayed on the display screen of the dynamometer body 101.

[0072] The supporting half ring 501 is used for providing preliminary support to the tension head 1011, and the auxiliary supporting half ring 503 is used for further auxiliary support on both sides of the supporting half ring 501. By turning the adjusting rod 506, the adjusting threaded column 505 can be driven to rotate, thereby adjusting the position of the auxiliary supporting half ring 503 to meet the support requirements in different situations.

[0073] The connecting head includes a cylindrical mounting head 2015 fixedly connected to the tension head 1011, and a horizontally pointing protrusion is arranged on the outer surface of the mounting head 2015 to assist in observing whether the position of the gripping net 301 is horizontal. The mounting head 2015 is fixedly installed with a protrusion on both sides of one end close to the tension meter body 101. Figure 7 The telescopic column 2016 shown has a stabilizing mechanism disposed at the other end thereof.

[0074] The mounting head 2015 and the telescopic column 2016 fixedly installed at the tension head 1011 are used to ensure the stability of the tension head 1011 when it moves under the action of tension. The telescopic column 2016 is connected to the tension meter body 101 through a stabilizing mechanism to ensure the overall stability, while also ensuring that the tension head 1011 can rotate with the mounting head 2015, thereby realizing the flipping of the test mechanism 300.

[0075] The stabilizing mechanism includes a stabilizing ring 2017 disposed outside the connecting head. One end of the stabilizing ring 2017 is fixedly connected to the telescopic column 2016 , and the other end of the stabilizing ring 2017 is rotatably connected to the dynamometer body 101 .

[0076] A matching annular groove is provided at the contact point between the dynamometer body 101 and the stabilizing ring 2017 , and the dynamometer body 101 is rotatably connected to the stabilizing ring 2017 via the annular groove.

[0077] The telescopic column 2016 is connected to the tensile gauge body 101 through a stabilizing ring 2017 to ensure overall stability, while also ensuring that the tensile head 1011 can rotate with the mounting head 2015 , thereby achieving flipping of the testing mechanism 300 .

[0078] Transmission parts include Fig.10 The telescopic rod 2018 shown in the figure has one end fixedly connected to the driving gear 2013, and the other end of the telescopic rod 2018 is fixedly connected to the driving motor 2014. A stabilizing member 2019 is movably installed on the side of the extended end of the telescopic rod 2018, and the other end of the stabilizing member 2019 is fixedly connected to a connecting ring with a built-in connection ring. Figure 6 The synchronizer ring 2020 shown is movably mounted on the outer surface of the connector.

[0079] The arrangement of the telescopic rod 2018 enables the driving gear 2013 to be displaced synchronously with the displacement of the tension head 1011, thereby ensuring that the driving gear 2013 and the synchronous gear ring 2012 are always in a state of meshing transmission.

[0080] The telescopic rod 2018 is connected to the synchronous ring 2020 by the stabilizing member 2019, so that when the connecting head is displaced under the action of the tension head 1011, the stabilizing member 2019 can drive the telescopic rod 2018 to displace synchronously, thereby ensuring that the driving gear 2013 and the synchronous gear ring 2012 are always in a state of meshing transmission. The active connection state between the synchronous ring 2020 and the connecting head ensures that the synchronous ring 2020 will not interfere with the normal rotation of the connecting head while ensuring that the telescopic rod 2018 can be synchronously extended and retracted. At the same time, the outer surface of the connecting head should also be provided with an annular groove adapted to the inner connecting ring of the synchronous ring 2020, so as to cooperate and ensure the stability of the synchronous ring 2020 when rotating relative to the connecting head.

[0081] It is worth mentioning that the telescopic rod 2018 is a rod body that can only undergo relative displacement but not relative rotation, thereby ensuring that the driving motor 2014 can smoothly drive the driving gear 2013 at the other end of the telescopic rod 2018 to rotate.

[0082] The stabilizer 2019 includes a connecting block 2021 fixedly connected to the synchronizing ring 2020, and the other end of the connecting block 2021 is fixedly connected to a hollow inner ring such as a retaining ring. Fig. 9 The clamping sleeve 2022 shown is rotatably connected to the extended end of the telescopic rod 2018.

[0083] The stabilizing member 2019 includes a sleeve 2022 which is clamped with the protruding end of the telescopic rod 2018. The sleeve 2022 can rotate relative to the protruding end of the telescopic rod 2018, but will not move relative to the protruding end of the telescopic rod 2018. The other end of the sleeve 2022 is fixedly connected to a connecting block 2021, and the connecting block 2021 is used to fix the sleeve 2022 to the synchronization ring 2020.

[0084] The ferrule 2022 is a hollow sleeve with a built-in snap ring. The ferrule 2022 is snap-connected to the extended end of the telescopic rod 2018 through the snap ring. A snap groove is also provided at the contact point between the extended end of the telescopic rod 2018 and the snap ring for matching.

[0085] The lifting mechanism includes a lifting plate 3011 arranged at the bottom end of the grasping net 301, the bottom end of the lifting plate 3011 is fixedly mounted with the protruding end of the telescopic cylinder 3012, the top end of the lifting plate 3011 is provided with a buffer mechanism for buffering the mouse, and the bottom end of the lifting plate 3011 is provided with a stabilizing structure.

[0086] The stabilizing structure includes sleeve rods 3014 fixedly mounted on both sides of the bottom end of the lifting plate 3011, and the other ends of the sleeve rods 3014 are fixedly connected to the supporting mechanism.

[0087] The setting of the sleeve rod 3014 is used to ensure the stability of the lifting plate 3011 when it moves, and also plays a certain limiting role on the lifting plate 3011.

[0088] The buffer mechanism includes a silicone pad 3016 with a plurality of protrusions on the surface of the top of the lifting plate 3011 . The protrusions can stimulate the mouse so that the mouse's limbs can tightly grasp the gripping net 301 . The silicone pad 3016 is bonded to the lifting plate 3011 .

[0089] The silicone cushion 3016 is used to ensure the comfort of the lifting plate 3011 when it is placed on the mouse, so as to prevent the mouse from being too nervous and not cooperating with the test.

[0090] The support mechanism includes a support base 3013 fixedly installed at the bottom end of the lifting mechanism, a support column 3015 is fixedly installed on the other side of the top of the support base 3013, the other end of the support column 3015 is fixedly connected to the dynamometer assembly 100, and a retractable protective mechanism 600 is provided on the bottom side of the support column 3015.

[0091] The protection mechanism 600 includes a protection ring 601 fixedly mounted on the outer surface of the support column 3015, and retractable protection rods 602 are hinged on both sides of the bottom end of the protection ring 601, and a triangular sliding seat 603 is hinged on the other end of the protection rod 602, and the other end of the sliding seat 603 is slidably connected to the support base 3013. Limiting bolts 604 with anti-slip patterns on the ends are threadedly mounted on both sides of the top of the sliding seat 603, and a conical extension protection material 605 is bonded to the outer side of the protection rod 602.

[0092] By providing a triangular sliding seat 603 , the contact area between the sliding seat 603 and the supporting base 3013 can be reduced, thereby ensuring the convenience of adjusting the sliding seat 603 .

[0093] A bolt hole matched with the limiting bolt 604 is provided at the top of the supporting base 3013, so as to facilitate the limiting of the protective rod 602 after adjusting its position relative to the protective ring 601.

[0094] The extended protection material 605 is used to protect the outer side of the protection rod 602, so as to prevent the support column 3015 from being damaged.

[0095] The support base 3013 is used to support the lifting mechanism, and the support column 3015 is used to support the dynamometer assembly 100 .

[0096] The anti-skid mechanism includes an anti-skid pad arranged at the bottom end of the support mechanism, the anti-skid pad is bonded to the bottom side wall of the support mechanism, and the bonding portion between the anti-skid pad and the support mechanism is provided with a Fig.14 The anti-falling mechanism 700 is shown.

[0097] The anti-falling mechanism 700 includes a support seat 701 fixedly installed on the top side of the support base 3013, an adjusting bolt 702 is threadedly installed in the middle of the support seat 701, a wavy limiting anti-falling strip 703 is fixedly installed on the bottom end of the adjusting bolt 702, a polygonal adjusting block 704 is fixedly installed on the top end of the adjusting bolt 702, a socket column 705 is fixedly installed on the top end of the limiting anti-falling strip 703, and the other end of the socket column 705 is fixedly connected to the support seat 701.

[0098] By setting the position-limiting anti-slip strip 703 to be wavy, the contact area between the position-limiting anti-slip strip 703 and the anti-slip pad is increased, thereby ensuring the stability of the position-limiting, thereby preventing the anti-slip pad from falling off the bottom side of the support mechanism.

[0099] By rotating the adjustment block 704, the position of the limit anti-slip strip 703 relative to the support base 3013 can be adjusted, so as to facilitate the bonding of the anti-slip pad to the bottom side of the support mechanism. The purpose of setting the adjustment block 704 in a polygonal shape is to increase the contact area between the user and the adjustment block 704, so as to ensure that the user can smoothly rotate the adjustment block 704.

[0100] When conducting the test, the mouse is placed on the lifting plate 3011. At this time, the mouse's hind paws need to be placed on the gripping net 301. The telescopic cylinder 3012 is started to drive the lifting plate 3011 to move downward until it is completely away from the mouse. At this time, the mouse's front paws have no footholds, and the mouse can only tightly grasp the gripping net 301 with its hind paws. At this time, the adjustment mechanism 200 is used to drive the test mechanism 300 to flip, and the gripping net 301 flips 180 degrees accordingly. At this time, the state of the gripping net 301 is that the mouse's body will be in a downward state. At this time, a mechanical analysis is performed, and the gripping force of the mouse's hind paws is vertically downward, and then it is converted with the forty-five degree angle between the gripping net 301 and the connecting column 201, and combined with the value on the dynamometer body 101, the gripping force of the mouse's hind paws in this test can be calculated.

[0101] The force analysis at the gripping net 301 is as follows, assuming that the value displayed on the dynamometer body 101 is X, the gravity of the mouse relative to the gripping net 301 is G, and the gripping force is F;

[0102] like Figure 8 As shown, since the angle between the gripping net 301 and the connecting column 201 is forty-five degrees, assuming that the force X at the dynamometer body 101 = square root of 2, then the force on one side of the dynamometer body 101 perpendicular to the gripping net 301 is square root of 2*sin45°, that is, square root of 2*square root of 2 / 2=1, then the force on one side of the mouse perpendicular to the gripping net 301 is also 1, then G+F=1 / cos45°=square root of 2, that is, G+F=X, then F=XG, so the gripping force should be the difference between the value displayed on the dynamometer body 101 and the gravity of the mouse.

[0103] like Fig.11 and Fig.12 The mounting mechanism 400 shown includes a mounting plate 401 fixedly mounted on the bottom end of the dynamometer assembly 100, a connecting plate 402 is provided at the bottom end of the mounting plate 401, and the connecting plate 402 is fixedly connected to the supporting mechanism, mounting columns 403 are fixedly mounted on both sides of the bottom end of the mounting plate 401, mounting holes 404 matching the mounting columns 403 are provided on both sides of the top end of the connecting plate 402, a pressing column 405 is movably installed inside the mounting hole 404, the pressing column 405 passes through the inner bottom wall of the mounting hole 404 and is fixedly connected to a linkage plate 406, a spring column 407 is fixedly mounted on the top end of the linkage plate 406, the other end of the spring column 407 is fixedly connected to the inner bottom wall of the connecting plate 402, and a limiting mechanism 408 is fixedly mounted on one side of the top end of the linkage plate 406.

[0104] The limiting mechanism 408 includes a limiting column 409 fixedly connected to the linkage plate 406, a spring rod 410 is fixedly installed on one side of the limiting column 409 close to the mounting hole 404, the other end of the spring rod 410 is fixedly connected to a limiting wedge block 411, a through groove is provided on one side of the mounting hole 404 close to the limiting wedge block 411, and a limiting groove matching the limiting wedge block 411 is provided on the side of the mounting column 403.

[0105] The connection between the dynamometer assembly 100 and the support column 3015 is achieved through the mounting mechanism 400. When installing the dynamometer assembly 100, the mounting columns 403 on both sides of the bottom end of the mounting plate 401 are aligned with the mounting holes 404 on the connecting plate 402 for plugging. The pressing column 405 is pressed by the mounting column 403 and moves downward, thereby driving the linkage plate 406 to move downward, and the limiting column 409 at the limiting mechanism 408 moves downward accordingly. When the limiting column 409 moves to the position where the limiting wedge block 411 corresponds to the through groove, the mounting column 403 has also moved to the state where the limiting groove corresponds to the through groove. At this time, under the action of the spring rod 410, the limiting wedge block 411 will move through the through groove toward the direction of the limiting groove and fully contact the limiting groove, thereby completing the connection limit between the dynamometer assembly 100 and the support column 3015.

[0106] When the dynamometer assembly 100 needs to be removed later, since the wavy surface of the limiting wedge block 411 is facing downward, the dynamometer assembly 100 can be pulled upward to apply a certain force to the limiting wedge block 411, thereby driving the limiting wedge block 411 to move in a direction away from the limiting groove, thereby releasing the limiting relationship between the two, and thus removing the dynamometer assembly 100 from the support column 3015. Subsequently, under the action of the spring column 407, the pressing column 405 will also be reset, which is convenient for the subsequent re-installation of the limit.

[0107] It is worth mentioning that the elastic force of the spring rod 410 is greater than the elastic force of the spring column 407 , so in a normal installation state, without the aid of external force, the installation mechanism 400 can ensure installation stability.

[0108] When in use, during the test, the mouse is placed on the lifting plate 3011. At this time, the mouse's hind paws need to be placed on the gripping net 301. The telescopic cylinder 3012 is started to drive the lifting plate 3011 to move downward until it is completely away from the mouse. At this time, the mouse's front paws have no footholds, and the mouse can only tightly grasp the gripping net 301 with its hind paws. At this time, the adjustment mechanism 200 is used to drive the test mechanism 300 to flip, and the gripping net 301 will flip 180 degrees. The body of the mouse will be in a downward state. At this time, a mechanical analysis is performed. The gripping force of the mouse's hind paws is vertically downward. The forty-five degree angle between the gripping net 301 and the connecting column 201 is converted, and combined with the value on the dynamometer body 101, the gripping force of the mouse's hind paws in this test can be calculated.

[0109] The adjusting mechanism 200 includes a connecting head with a horizontally pointing protrusion on its surface which is rotatably connected to the tensile gauge assembly 100, a connecting column 201 is fixedly installed on the other end of the connecting head, and the other end of the connecting column 201 is fixedly connected to the testing mechanism 300, a synchronous column 2011 is fixedly installed on the side of the connecting head, and the other end of the synchronous column 2011 is fixedly connected to a synchronous gear ring 2012, and the other end of the synchronous gear ring 2012 is transmission-connected to a driving gear 2013, and the axial end of the driving gear 2013 is transmission-connected to a driving motor 2014 through a transmission member, and the driving motor 2014 is fixedly connected to the tensile gauge assembly 100, and the connecting head includes a cylindrical mounting head 2015 fixedly connected to the tensile head 1011, and telescopic columns 216 are fixedly installed on both sides of one end of the mounting head 2015 close to the tensile gauge body 101, and the other end of the telescopic column 2016 is fixedly connected to the A stabilizing mechanism is provided at one end, and the stabilizing mechanism includes a stabilizing ring 2017 provided on the outside of the connecting head, one end of the stabilizing ring 2017 is fixedly connected to the telescopic column 2016, and the other end of the stabilizing ring 2017 is rotatably connected to the dynamometer body 101, and a matching annular groove is provided at the contact point between the dynamometer body 101 and the stabilizing ring 2017, and the dynamometer body 101 is rotatably connected to the stabilizing ring 2017 through the annular groove, and the transmission member includes a telescopic rod 2018, one end of the telescopic rod 2018 is fixedly connected to the driving gear 2013, and the other end of the telescopic rod 2018 is fixedly connected to the driving motor 2014, and a stabilizing member 2019 is movably installed on the side of the extended end of the telescopic rod 2018, and the other end of the stabilizing member 2019 is fixedly connected to a synchronous ring 2020 with a built-in connecting ring, and the synchronous ring 2020 is movably installed on the outer surface of the connecting head.

[0110] The adjusting mechanism 200 is connected to the tensile gauge assembly 100 through a connecting head, and is connected to the testing mechanism 300 through a connecting column 201. The driving motor 2014 is used to drive the driving gear 2013 to rotate, thereby driving the synchronous gear ring 2012 to rotate, so that the testing mechanism 300 is flipped. The mounting head 2015 and the telescopic column 2016 fixedly installed at the tensile head 1011 are used to ensure the stability of the tensile head 1011 when it moves under the action of tension. The telescopic column 2016 is connected to the tensile gauge body 101 through a stabilizing ring 2017, so as to ensure the overall stability, and also ensure that the tensile head 1011 can rotate with the mounting head 2015, so as to realize the flipping of the testing mechanism 300 and the telescopic column 2016. The setting of the retractable rod 2018 enables the driving gear 2013 to be displaced synchronously with the displacement of the tension head 1011, thereby ensuring that the driving gear 2013 and the synchronous gear ring 2012 are always in a state of meshing transmission. The telescopic rod 2018 is connected to the synchronous ring 2020 by the stabilizing member 219, so that when the connecting head is displaced under the action of the tension head 1011, the stabilizing member 2019 can drive the telescopic rod 2018 to be displaced synchronously, thereby ensuring that the driving gear 2013 and the synchronous gear ring 2012 are always in a state of meshing transmission. The active connection state of the synchronous ring 2020 and the connecting head ensures that the synchronous ring 2020 will not interfere with the normal rotation of the connecting head while ensuring that the telescopic rod 2018 can be synchronously extended and retracted.

[0111] The testing mechanism 300 includes a rectangular gripping net 301 with multiple grids fixedly connected to the connecting column 201, and the grids are evenly distributed on the surface of the gripping net 301. A lifting plate 3011 is provided at the bottom end of the gripping net 301, and the protruding end of the telescopic cylinder 3012 is fixedly installed at the bottom end of the lifting plate 3011, and a supporting base 3013 is fixedly installed at the bottom end of the telescopic cylinder 3012. Socket rods 3014 are fixedly installed on both sides of the bottom end of the lifting plate 3011, and the other end of the socket rod 3014 is fixedly connected to the supporting base 3013. A supporting column 3015 is fixedly installed on the other side of the top of the supporting base 3013, and the other end of the support column 3015 is fixedly connected to the dynamometer assembly 100. A silicone pad 3016 is provided at the top of the lifting plate 3011, and the silicone pad 3016 is bonded to the lifting plate 3011.

[0112] When conducting the test, the mouse is placed on the lifting plate 3011. At this time, the mouse's hind paws need to be placed on the gripping net 301. The telescopic cylinder 3012 is started to drive the lifting plate 3011 to move downward until it is completely away from the mouse. At this time, the mouse's front paws have no footholds, and the mouse can only tightly grasp the gripping net 301 with its hind paws. At this time, the adjustment mechanism 200 is used to drive the test mechanism 300 to flip, and the gripping net 301 flips 180 degrees accordingly. At this time, the state of the gripping net 301 is that the mouse's body will be in a downward state. At this time, a mechanical analysis is performed, and the gripping force of the mouse's hind paws is vertically downward, and then it is converted with the forty-five degree angle between the gripping net 301 and the connecting column 201, and combined with the value on the dynamometer body 101, the gripping force of the mouse's hind paws in this test can be calculated.

[0113] The force analysis at the gripping net 301 is as follows, assuming that the value displayed on the dynamometer body 101 is X, the gravity of the mouse relative to the gripping net 301 is G, and the gripping force is F;

[0114] Since the angle between the gripping net 301 and the connecting column 201 is forty-five degrees, assuming that the force X at the dynamometer body 101 = square root of 2, then the force on one side of the dynamometer body 101 perpendicular to the gripping net 301 is square root of 2*sin45°, that is, square root of 2*square root of 2 / 2=1, then the force on one side of the mouse perpendicular to the gripping net 301 is also 1, then G+F=1 / cos45°=square root of 2, that is, G+F=X, then F=XG, so the gripping force should be the difference between the value displayed on the dynamometer body 101 and the gravity of the mouse.

[0115] The rat and mouse limb motor function measuring instrument comprises a dynamometer assembly 100 , an adjusting mechanism 200 is arranged on the front of the dynamometer assembly 100 , and a testing mechanism 300 is arranged on the other end of the adjusting mechanism 200 .

[0116] The testing mechanism 300 includes a rectangular gripping net 301 with multiple grids fixedly connected to the connecting column 201, and the grids are evenly distributed on the surface of the gripping net 301. A lifting plate 3011 is provided at the bottom end of the gripping net 301, and the protruding end of the telescopic cylinder 3012 is fixedly installed at the bottom end of the lifting plate 3011, and a supporting base 3013 is fixedly installed at the bottom end of the telescopic cylinder 3012. Socket rods 3014 are fixedly installed on both sides of the bottom end of the lifting plate 3011, and the other end of the socket rod 3014 is fixedly connected to the supporting base 3013. A supporting column 3015 is fixedly installed on the other side of the top of the supporting base 3013, and the other end of the support column 3015 is fixedly connected to the dynamometer assembly 100. A silicone pad 3016 is provided at the top of the lifting plate 3011, and the silicone pad 3016 is bonded to the lifting plate 3011.

[0117] When conducting the test, the mouse is placed on the lifting plate 3011. At this time, the mouse's front paws need to be placed on the gripping net 301. The telescopic cylinder 3012 is started to drive the lifting plate 3011 to move downward until it is completely away from the mouse. At this time, the mouse's hind paws have no footholds, and the mouse can only tightly grasp the gripping net 301 with its front paws. At this time, the adjustment mechanism 200 is used to drive the test mechanism 300 to flip, and the gripping net 301 will flip 180 degrees. The body of the mouse will be in a downward state. At this time, a mechanical analysis is performed. The gripping force of the mouse's front paws is vertically downward. The forty-five degree angle between the gripping net 301 and the connecting column 201 is converted, and combined with the value on the dynamometer body 101, the gripping force of the mouse's front paws in this test can be calculated.

[0118] The force analysis at the gripping net 301 is as follows, assuming that the value displayed on the dynamometer body 101 is X, the gravity of the mouse relative to the gripping net 301 is G, and the gripping force is F;

[0119] Since the angle between the gripping net 301 and the connecting column 201 is forty-five degrees, assuming that the force X at the dynamometer body 101 = square root of 2, then the force on one side of the dynamometer body 101 perpendicular to the gripping net 301 is square root of 2*sin45°, that is, square root of 2*square root of 2 / 2=1, then the force on one side of the mouse perpendicular to the gripping net 301 is also 1, then G+F=1 / cos45°=square root of 2, that is, G+F=X, then F=XG, so the gripping force should be the difference between the value displayed on the dynamometer body 101 and the gravity of the mouse.

[0120] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The instrument for measuring the limb motor function of mice and rats is characterized by: The invention comprises a tensile gauge assembly (100), wherein an adjustment mechanism (200) is arranged on the front of the tensile gauge assembly (100), and a testing mechanism (300) is arranged on the other end of the adjustment mechanism (200); the adjustment mechanism (200) comprises a connecting head, wherein the connecting head is rotatably connected to the tensile gauge assembly (100), a connecting column (201) is fixedly mounted on the end of the connecting head, the end of the connecting column (201) is fixedly connected to the testing mechanism (300), a synchronizing column (211) is fixedly mounted on the side of the connecting head, the end of the synchronizing column (211) is fixedly connected to a synchronizing gear ring (212), and the end of the synchronizing gear ring (212) is transmission connected to the end of the synchronizing gear ring (212). The test mechanism (300) is connected to a driving gear (2013), the shaft end of the driving gear (2013) is connected to a driving motor (214) through a transmission member, and the driving motor (2014) is fixedly connected to the tensile gauge assembly (100); the testing mechanism (300) comprises a gripping net (301), the gripping net (301) is fixedly connected to the connecting column (201), a plurality of grids are arranged on the gripping net (301), and the gripping net (301) and the connecting column (201) form an angle of forty-five degrees; the tensile gauge assembly (100) comprises a tensile gauge body (101), and a tensile head (1011) for testing tension is arranged on the front of the tensile gauge body (101); The bottom end of the gripping net (301) is provided with a lifting mechanism for placing a mouse; the lifting mechanism comprises a lifting plate (3011), the lifting plate (3011) is provided at the bottom end of the gripping net (301), and a telescopic cylinder (3012) is fixedly mounted on the bottom end of the lifting plate (3011); the top end of the lifting plate (3011) is provided with a buffer mechanism for buffering the mouse; the buffer mechanism comprises a silicone pad (3016), the silicone pad (3016) is provided with a plurality of protrusions, the silicone pad (3016) is provided on the top end surface of the lifting plate (3011), and the silicone pad (3016) is bonded to the lifting plate (3011).

2. The rat limb motor function measuring instrument according to claim 1, characterized in that: A support structure (500) is provided on the bottom side of the tension head (1011); the support structure (500) comprises a support half ring (501), the support half ring (501) is slidably mounted on the bottom end of the tension head (1011), a triangular support frame (502) is fixedly mounted on the bottom end of the support half ring (501), the side of the triangular support frame (502) is fixedly connected to the tension meter body (101), auxiliary support half rings (503) are provided on both sides of the support half ring (501), a synchronous sleeve (504) is fixedly mounted on one side adjacent to the auxiliary support half ring (503), an adjusting threaded column (505) is threadedly mounted on one side adjacent to the synchronous sleeve (504), the adjusting threaded column (505) is rotatably connected to the triangular support frame (502), and an adjusting rod (506) is fixedly mounted on the outer surface of one side of the adjusting threaded column (505) close to the triangular support frame (502).

3. The rat limb motor function measuring instrument according to claim 1, characterized in that: The surface of the connecting head is provided with a horizontally pointing protrusion; the connecting head comprises a mounting head (2015), the mounting head (2015) is fixedly connected to the tension head (1011), the horizontally pointing protrusion is arranged on the outer surface of the mounting head (2015), and telescopic columns (2016) are fixedly installed on both sides of one end of the mounting head (2015) close to the tension meter body (101), and a stabilizing mechanism is arranged at the other end of the telescopic column (2016).

4. The rat limb motor function measuring instrument according to claim 3, characterized in that: The stabilizing mechanism comprises a stabilizing ring (2017), wherein the stabilizing ring (2017) is arranged outside the connecting head, one end of the stabilizing ring (2017) is fixedly connected to the telescopic column (2016), and the other end of the stabilizing ring (2017) is rotatably connected to the tensile gauge body (101); a matching annular groove is provided at the contact point between the tensile gauge body (101) and the stabilizing ring (2017), and the tensile gauge body (101) is rotatably connected to the stabilizing ring (2017) via the annular groove.

5. The rat limb motor function measuring instrument according to claim 1, characterized in that: The transmission member comprises a telescopic rod (2018), one end of the telescopic rod (2018) is fixedly connected to a driving gear (2013), the other end of the telescopic rod (2018) is fixedly connected to a driving motor (2014), a stabilizing member (2019) is movably mounted on the side of the extended end of the telescopic rod (2018), a synchronizing ring (2020) is fixedly connected to the end of the stabilizing member (2019), a connecting ring (2020) is built in the synchronizing ring (2020), and the synchronizing ring (2020) is movably mounted on the outer surface of the connector; the stabilizing member (2019) comprises a connecting block (2021), the connecting block (2021) is fixedly connected to the synchronizing ring (2020), a clamping sleeve (2022) is fixedly connected to the end of the connecting block (2021), a clamping ring is built in the clamping sleeve (2022), and the clamping sleeve (2022) is rotatably connected to the extended end of the telescopic rod (2018).

6. The rat limb motor function measuring instrument according to claim 5, characterized in that: The bottom end of the lifting mechanism is provided with a support mechanism for supporting the lifting mechanism; the support mechanism comprises a support base (3013), the support base (3013) is fixedly mounted on the bottom end of the lifting mechanism, a support column (3015) is fixedly mounted on the top side of the support base (3013), and the end of the support column (3015) is fixedly connected to the tension gauge assembly (100); a retractable protection mechanism (600) is provided on the bottom side of the support column (3015); the protection mechanism (600) comprises a protection ring (601), and the protection ring ( 601) is fixedly installed on the outer surface of the support column (3015), and retractable protective rods (602) are hinged on both sides of the bottom end of the protective ring (601), and the ends of the protective rods (602) are hinged with triangular sliding seats (603), and the ends of the sliding seats (603) are slidably connected to the support base (3013), and limiting bolts (604) are threadedly installed on both sides of the top of the sliding seat (603), and the ends of the limiting bolts (604) are provided with anti-slip patterns, and the outer side of the protective rod (602) is bonded with protective material (605).

7. The rat limb motor function measuring instrument according to claim 6, characterized in that: The bottom end of the support mechanism is provided with an anti-skid mechanism for ensuring the overall stability of the support mechanism; the anti-skid mechanism comprises an anti-skid pad, which is provided at the bottom end of the support mechanism and is bonded to the bottom side wall of the support mechanism; an anti-falling mechanism (700) is provided at the bonding point between the anti-skid pad and the support mechanism; the anti-falling mechanism (700) comprises a support seat (701), the support seat (701) is fixedly mounted on the top of the support base (3013), an adjusting bolt (702) is threadedly mounted on the middle part of the support seat (701), a wavy position-limiting anti-falling strip (703) is fixedly mounted on the bottom end of the adjusting bolt (702), a polygonal adjusting block (704) is fixedly mounted on the top end of the adjusting bolt (702), a sleeve column (705) is fixedly mounted on the top end of the position-limiting anti-falling strip (703), and the end of the sleeve column (705) is fixedly connected to the support seat (701).

8. The rat limb motor function measuring instrument according to claim 6, characterized in that: The support mechanism is connected to the dynamometer assembly (100) via a mounting mechanism (400); the mounting mechanism (400) comprises a mounting plate (401), the mounting plate (401) is fixedly mounted on the bottom end of the dynamometer assembly (100), a connecting plate (402) is provided at the bottom end of the mounting plate (401), the connecting plate (402) is fixedly connected to the support mechanism, mounting columns (403) are fixedly mounted on both sides of the bottom end of the mounting plate (401), and the connecting plate (402) is fixedly mounted on the bottom end of the mounting plate (401). ) are provided with mounting holes (404) adapted to the mounting columns (403) on both sides of the top end thereof, a pressing column (405) is movably installed inside the mounting hole (404), the pressing column (405) passes through the inner bottom wall of the mounting hole (404), a linkage plate (406) is fixedly connected to the pressing column (405), a spring column (407) is fixedly installed at the top end of the linkage plate (406), and the end of the spring column (407) is fixedly connected to the inner bottom wall of the connecting plate (402).

9. The rat limb motor function measuring instrument according to claim 8, characterized in that: A limiting mechanism (408) is fixedly installed on the top side of the linkage plate (406); the limiting mechanism (408) comprises a limiting column (409), the limiting column (409) is fixedly connected to the linkage plate (406), a spring rod (410) is fixedly installed on a side of the limiting column (409) close to the mounting hole (404), the end of the spring rod (410) is fixedly connected to a limiting wedge block (411), a through groove is provided on a side of the mounting hole (404) close to the limiting wedge block (411), and a limiting groove matched with the limiting wedge block (411) is provided on a side of the mounting column (403).

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