Tool installed on transmission and used for measuring separation stroke of clutch

Abstract

The utility model belongs to the field of clutch separation stroke measurement, and discloses a tool installed on a transmission and used for measuring the separation stroke of a clutch. Comprising a clamping plate, a window cover, a measuring piece and a clamping plate seat, the clamping plate seat is provided with a through hole in the horizontal direction, the measuring piece penetrates through the through hole to be fixedly connected with the window cover, the clamping plate is fixedly installed at the upper end of the clamping plate seat, the clamping plate seat can move front and back on the measuring piece, the clamping plate, the window cover, the measuring piece and the clamping plate seat are assembled and fixed, and the clamping plate seat is installed at the lower end of a transmission through screws. When a driver does not step on the separation pedal, the scale position of the clamping plate seat on the measuring piece is recorded as a numerical value I; when a driver steps on the pedal and power is cut off, the clamping plate is pushed to move to the rear end face of the bottom of the rotated release fork, the scale position of the clamping plate seat on the measuring piece is recorded as a numerical value 2, the numerical value 1 is subtracted from the numerical value 2, and the actual release stroke is calculated according to the lever ratio of the release fork.

Description

Technical Field

[0001] This utility model belongs to the field of clutch disengagement stroke measurement technology, and relates to a tooling installed on a transmission to measure the clutch disengagement stroke. Background Technology

[0002] In the process of arranging the vehicle chassis, calculating the clutch disengagement stroke is a crucial step in ensuring the normal operation of the power transmission system. As a key component of the automotive transmission system, the clutch's primary function is to disconnect power between the engine and the transmission when the driver depresses the clutch pedal, enabling gear shifting or smooth starting. Calculating the clutch disengagement stroke—the distance the clutch travels to the clutch end after the driver depresses the clutch pedal—is an important basis for evaluating whether the clutch can effectively disengage and disconnect power transmission.

[0003] Currently, OEMs primarily rely on theoretical calculations based on the dimensions of individual components' drawings when calculating clutch disengagement stroke. While this method provides preliminary design parameters, the calculated theoretical values ​​often differ significantly from the actual values ​​after assembly due to various factors.

[0004] First, the existence of free travel is one of the important reasons for the difference between theoretical and actual values. Free travel refers to the distance the clutch pedal travels from its initial position until the clutch begins to disengage. During this travel, the pedal mainly overcomes friction within the pedal mechanism, spring preload, and clearances between various components. Due to the complexity of these factors, the magnitude of free travel is often difficult to predict accurately, leading to deviations between theoretical and actual values.

[0005] Secondly, dimensional tolerances of parts and fit tolerances of components are also important factors affecting the clutch disengagement stroke. During the manufacturing process, due to various reasons such as machining accuracy, material properties, and assembly processes, the actual dimensions of parts often deviate from the dimensions on the drawings. These deviations accumulate during clutch assembly, causing a difference between the actual and theoretical values ​​of the clutch disengagement stroke. Furthermore, the fit tolerances between components also affect the clutch's disengagement performance. If the fit is too tight, the clutch may not disengage completely; if the fit is too loose, it may affect the clutch's stability and durability.

[0006] Finally, the fact that the clutch is installed in a confined space makes it difficult to directly measure its disengagement stroke. This characteristic further increases the difference between theoretical and actual values. Because the clutch disengagement stroke cannot be directly observed and measured, OEMs often have to rely on indirect methods to evaluate the clutch's disengagement effectiveness, such as measuring pedal travel, observing engine speed changes, or conducting road tests. While these methods can provide some reference information, they often fail to accurately reflect the actual disengagement stroke of the clutch. Utility Model Content

[0007] The purpose of this invention is to provide a tooling for measuring the clutch disengagement stroke when mounted on a transmission, addressing the shortcomings of the prior art.

[0008] To solve the above technical problems, the present invention adopts the following technical solution: a tooling for measuring the clutch disengagement stroke installed on a transmission includes: a clamping plate, a window cover, a measuring element, and a clamping plate seat; the clamping plate seat is provided with a through hole in the horizontal direction, the measuring element passes through the through hole and is fixedly connected to the window cover, the clamping plate is fixedly installed on the upper end of the clamping plate seat, and the clamping plate seat can move back and forth on the measuring element.

[0009] Furthermore, a connection hole is provided at the corner of the window cover, through which the connector is detachably connected to the transmission.

[0010] Furthermore, the card plate is glued to the card plate seat, and the window cover is glued to the measuring component.

[0011] Furthermore, a clutch is provided at one end of the transmission, and the clutch is rotatably connected to the transmission via a release bearing.

[0012] Furthermore, a protrusion is provided on the side wall of the release bearing, and the release fork rotates around the release fork shaft, with one end abutting against the protrusion and the other end connected to the clutch booster pump.

[0013] Furthermore, the clutch booster pump is located on one side of the transmission and is detachably connected to the transmission via a connector.

[0014] Furthermore, the card plate is installed between the other end of the release fork and the clutch booster pump.

[0015] Furthermore, the surface of the measuring element is provided with a scale for reading.

[0016] Furthermore, the card plate, window cover, measuring element, and card plate holder are made of metal.

[0017] Furthermore, the card plate is a right-angled card plate.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] This utility model discloses a tooling for measuring the clutch disengagement stroke when installed on a transmission. Theoretically, the disengagement stroke value is the same for the same vehicle model. However, due to factors such as idle stroke, part size tolerance, and component fit tolerance, the actual disengagement stroke varies for each vehicle. The data measured using this tooling is more accurate than the theoretical value.

[0020] This utility model discloses a tooling for measuring the clutch disengagement stroke when installed on a transmission. It has a small overall size and occupies little space. Since there are no other parts obstructing the bottom of the transmission, it can be detached and installed through a connector, making it simple to operate and easy to install.

[0021] This utility model discloses a tooling installed on the transmission to measure the clutch disengagement stroke, which can measure the position of the disengagement fork without changing the original layout and structure of the vehicle chassis.

[0022] This utility model discloses a tooling for measuring the clutch disengagement stroke installed on a transmission. The clamping plate and clamping plate seat, as well as the window cover and measuring component, are fixed by adhesive. Different sizes of window covers can be replaced according to different transmission models to meet the installation requirements. If the bottom position of the disengagement fork changes vertically, the clamping plate can be replaced to ensure that it can abut against the bottom rear end of the disengagement fork. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a tooling for measuring the clutch disengagement stroke installed on a transmission according to the present invention;

[0025] Figure 2 This is a side view of a tooling for measuring clutch disengagement stroke mounted on a transmission according to the present invention;

[0026] Figure 3 This is a front view of a tooling device for measuring clutch disengagement stroke mounted on a transmission according to the present invention;

[0027] Figure 4 This is a top view of a tooling device installed on a transmission to measure the clutch disengagement stroke according to the present invention;

[0028] Figure 5 This is an exploded view of the tooling for measuring the clutch disengagement stroke mounted on the transmission in an embodiment of this utility model;

[0029] Figure 6 This is a structural diagram of the release fork, release bearing, and clutch booster pump in an embodiment of this utility model.

[0030] Figure label:

[0031] 1-Clamping plate; 2-Window cover; 3-Measuring component; 4-Clamping plate seat; 5-Connecting hole; 6-Gearbox; 7-Clutch; 8-Release bearing; 9-Release fork; 10-Clutch booster pump. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, such as a process, method, system, product, or apparatus comprising a series of steps or units, are not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] The present invention will now be described in further detail with reference to the accompanying drawings:

[0035] Example 1

[0036] This utility model provides a tooling for measuring the clutch disengagement stroke when mounted on a transmission, such as... Figure 2 ,like Figure 3 As shown, it includes a card plate 1, a window cover 2, a measuring element 3, and a card plate base 4; the card plate base 4 is provided with a through hole in the horizontal direction, the measuring element 3 passes through the through hole and is fixedly connected to the window cover 2, the card plate 1 is fixedly installed on the upper end of the card plate base 4, and the card plate base 4 can move back and forth on the measuring element 3.

[0037] Specifically: Card plate 1 is a right-angled card plate, installed on the upper end of card plate base 4, and fixed by adhesive, such as... Figure 1 As shown, the shorter end of the card plate 1 is connected to the card plate base 4. (As indicated...) Figure 4As shown, the card holder 4 has a through hole in the horizontal direction. The through hole is adapted to the size of the measuring piece 3. The measuring piece 3 passes through the through hole in the card holder 4, and its two ends are fixed to the window cover 2 by adhesive. The window cover 2 has a connecting hole 5 near the corner. In this embodiment, the connecting piece is a screw. The connecting piece passes through the window cover 2 from bottom to top and is threaded to the gearbox 6.

[0038] The caliper 1, window cover 2, measuring component 3, and caliper base 4 are made of metal materials, which show more significant benefits in terms of strength and durability, thermal and electrical conductivity, processing and forming difficulty, corrosion resistance, oxidation resistance, cost and maintenance. They have higher reliability and stability and can meet a variety of different measurement needs and application scenarios.

[0039] The clamping plate 1 and clamping plate seat 4, as well as the window cover 2 and measuring piece 3, are fixed by adhesive. The window cover 2 can be replaced according to different models of the transmission 6, and the clamping plate 1 can be replaced according to the size of the release fork 9 to meet the measurement requirements.

[0040] In summary, the tooling for measuring the clutch assembly stroke is small in overall size and occupies little space. In addition, there are no other parts obstructing the bottom of the transmission 6, and it is installed through connecting parts, making the operation simple.

[0041] A clutch 7 is provided at one end of the transmission 6, and the clutch 7 is rotatably connected to the transmission 6 via a release bearing 8. Figure 5 As shown, clutch 7 is mounted at one end of transmission 6, and release bearing 8 is mounted between transmission 6 and clutch 7, allowing it to move back and forth on the transmission. Figure 6 As shown, a protrusion is provided on the side wall of the release bearing 8. The release fork 9 rotates around the release fork shaft, with one end abutting against the protrusion and the other end connected to the clutch booster pump 10. The clutch booster pump 10 is mounted on one side of the transmission 6 and is threadedly connected to the transmission 6 by screws.

[0042] The rear end face of the release fork 9 is installed on the front end face of the card plate 1. When the driver presses the clutch pedal, the clutch booster pump 10 pushes the bottom of the release fork 9 forward. Due to the lever principle, the top of the release fork 9 moves backward, which in turn pulls the release bearing 8 backward. During the movement, the release bearing 8 pulls the clutch 7, causing the clutch to disengage and thus disconnecting the power transmission.

[0043] This utility model discloses a tooling for measuring the clutch disengagement stroke when installed on a transmission. Theoretically, the disengagement stroke value is the same for the same vehicle model. However, due to factors such as idle stroke, part size tolerance, and component fit tolerance, the actual disengagement stroke varies for each vehicle. The data measured using this tooling is more accurate than the theoretical value.

[0044] A method for using a tooling installed on a transmission to measure the clutch disengagement stroke: First, assemble and fix the clamping plate 1, window cover 2, measuring piece 3, and clamping plate seat 4, and install them on the lower end of the transmission 6 with screws. When the driver does not depress the disengagement pedal, record the scale position of the clamping plate seat 4 on the measuring piece 3 as value one. When the driver depresses the pedal and the power is disconnected, push the clamping plate 1 to the bottom rear end face of the rotated disengagement fork 9, and record the scale position of the clamping plate seat 4 on the measuring piece 3 as value two. Subtract value one from value two, and calculate the actual disengagement stroke based on the lever ratio of the disengagement fork 9.

[0045] The working principle of a fixture for measuring clutch disengagement stroke installed on a transmission is as follows: The fixture is installed on the transmission 6. When the driver does not depress the clutch pedal, the scale position of the caliper seat 4 on the measuring piece 3 is recorded as reading one. After the driver depresses the pedal and the power is disconnected, the caliper 1 is pushed to the rear end face of the rotating release fork 9, and the scale position of the caliper seat 4 on the measuring piece 3 is recorded as reading two. The actual disengagement stroke is calculated by subtracting reading one from reading two based on the lever ratio of the release fork 9.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A tooling mounted on a transmission for measuring the clutch disengagement stroke, characterized in that: Includes a caliper (1), a window cover (2), a measuring piece (3), and a caliper base (4); The card holder (4) has a through hole in the horizontal direction. The measuring component (3) passes through the through hole and is fixedly connected to the window cover (2). The card (1) is fixedly installed on the upper end of the card holder (4). The card holder (4) can move back and forth on the measuring component (3).

2. The tooling for measuring clutch disengagement stroke mounted on a transmission according to claim 1, characterized in that: A connection hole (5) is provided at the corner of the window cover (2), and the connector passes through the connection hole (5) and is detachably connected to the gearbox (6).

3. The tooling for measuring clutch disengagement stroke mounted on a transmission according to claim 1, characterized in that: The card plate (1) is glued to the card plate seat (4), and the window cover (2) is glued to the measuring piece (3).

4. The tooling for measuring clutch disengagement stroke mounted on a transmission according to claim 2, characterized in that: The transmission (6) is provided with a clutch (7) at one end, and the clutch (7) is rotatably connected to the transmission (6) through a release bearing (8).

5. The tooling for measuring clutch disengagement stroke mounted on a transmission according to claim 4, characterized in that: The release bearing (8) has a protrusion on its side wall. The release fork (9) rotates around the release fork shaft. One end of the fork abuts against the protrusion, and the other end is connected to the clutch booster pump (10).

6. The tooling for measuring clutch disengagement stroke mounted on a transmission according to claim 5, characterized in that: The clutch booster pump (10) is located on one side of the transmission (6) and is detachably connected to the transmission (6) via a connector.

7. The tooling for measuring clutch disengagement stroke mounted on a transmission according to claim 5, characterized in that: The card plate (1) is installed between the other end of the release fork (9) and the clutch booster pump (10).

8. The tooling for measuring clutch disengagement stroke mounted on a transmission according to claim 1, characterized in that: The measuring element (3) has a scale on its surface that can be read.

9. The tooling for measuring clutch disengagement stroke mounted on a transmission according to claim 1, characterized in that: The card plate (1), window cover (2), measuring element (3) and card plate seat (4) are made of metal.

10. The tooling for measuring clutch disengagement stroke mounted on a transmission according to claim 9, characterized in that: The card plate (1) is a right-angled card plate.

Images