Flake spring pull-out force detection tool in automatic transmission

Abstract

The utility model relates to a tool for detecting the pull-out force of a leaf spring in an automatic transmission, relates to the technical field of special-shaped spring pull-out force detection, and solves the problem that the pull-out force of a special-shaped spring can not be directly tested by the existing universal force measuring equipment, the tool comprises a pressing plate, a base, a positioning base and a positioning piece, the pressing plate is provided with a pull-out hole, and the pressing plate is provided with a pull-out hole. A force measuring pin is inserted into the pull-out hole; a receding hole is formed in the position, corresponding to the pull-out hole, of the base. The positioning base is used for clamping the sheet spring to achieve front-back and left-right limiting, and a pin shaft to be detected on the sheet spring clamped on the positioning base, the pulling-out hole and the receding hole are coaxially arranged. The positioning piece is used for positioning and connecting the pressing plate, the positioning base and the base; the testing tool has the advantages that the testing tool is used in cooperation with universal force measuring equipment, force testing of the special-shaped sheet-shaped spring can be achieved, special drawing force testing equipment does not need to be purchased for the sheet-shaped spring, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to special-shaped spring pull-out force detection technical field, especially in automatic transmission in sheet spring pull-out force detection frock. BACKGROUND

[0002] Automatic transmission utilizes planetary gear mechanism to change speed, and it can automatically change speed according to the degree of accelerator pedal and vehicle speed change, and the driver only needs to control the accelerator pedal to control the vehicle speed. The spring in the automatic transmission of the automobile is mainly used to realize the shift locking function, prevent automatic shift or shift, and is the core component in the automatic transmission of the automobile. Therefore, in order to ensure the safe driving of the automobile, the pin shaft in the sheet spring in the automatic transmission needs to be tested.

[0003] The existing general type force measuring equipment can only test ordinary type springs (for example, helical springs), and the sheet spring 7' (refer to Figure 1 ) is used in the automatic transmission. Because the shape of the sheet spring 7' is special, the pin shaft 14' in the sheet spring 7' cannot be directly tested on the general type force measuring equipment, and there is no corresponding force measuring equipment that can directly meet the pull-out force performance detection of the pin shaft 14' in the sheet spring 7'. Therefore, in order to solve the existing technical problems, the utility model needs to provide a detection frock cooperating with the general type force measuring equipment to detect the pull-out force performance of the special-shaped sheet spring pin shaft. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a sheet spring pull-out force detection frock in an automatic transmission, which solves the problem that the existing general type force measuring equipment cannot directly test the pull-out force of special-shaped springs.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] The utility model provides a sheet spring pull-out force detection frock in an automatic transmission, which comprises:

[0007] A pressing plate is provided with a pull-out hole, and a force measuring pin is inserted in the pull-out hole;

[0008] A base is arranged below the pressing plate, and the base is provided with a avoiding hole at a position corresponding to the pull-out hole;

[0009] A positioning base is arranged between the base and the pressing plate, and the positioning base is used for clamping the sheet spring to limit the front and back and left and right directions. The pin shaft on the sheet spring clamped on the positioning base is coaxially arranged with the pull-out hole and the avoiding hole.

[0010] Positioning member, used for positioning and connecting the pressing plate, the positioning base and the base.

[0011] Further, the positioning base comprises a positioning block and a limiting block arranged on one side of the positioning block for passing through the end hole of the sheet spring, one side of the limiting block is provided with a limiting slot, a clamping plate is inserted in the limiting slot, the clamping plate extends longitudinally and penetrates through the pressing plate, the base and one side of the positioning block, and a clamping groove for embedding the roller of the sheet spring is arranged on one side of the positioning block close to the limiting slot.

[0012] Further, the limiting block is shaped to be matched with the shape of the end hole of the sheet spring.

[0013] Further, the positioning member is a positioning pin which longitudinally penetrates through the pressing plate, the positioning base and the base.

[0014] Further, the positioning pin and the clamping plate are both rectangular.

[0015] Further, the diameter of the force measuring pin is equal to or smaller than the diameter of the pin shaft in the sheet spring, and the inner diameter of the avoiding hole is larger than the diameter of the pin shaft in the sheet spring.

[0016] Thanks to the above technical scheme, the utility model has the following advantages compared with the prior art:

[0017] The utility model provides a kind of sheet spring pull-out force detection tool in automatic transmission, including pressing plate, base, positioning base and positioning member, and the pressing plate is provided with pull-out hole, and force measuring pin is inserted in the pull-out hole;The base is arranged below the pressing plate, and the base is provided with avoiding hole in the position corresponding to the pull-out hole;The positioning base is arranged between the base and the pressing plate, and the positioning base is used to clamp the sheet spring to realize front and rear, left and right limit, and the pin shaft on the sheet spring clamped on the positioning base is coaxially arranged with the pull-out hole and the avoiding hole;The positioning member is used for positioning and connecting the pressing plate, the positioning base and the base.This detection tool can be used with general force measuring equipment, and the pin shaft pull-out force in special-shaped sheet spring can be detected, special drawing force test equipment is not needed for sheet spring, and cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Some specific embodiments of the utility model will be described in detail hereinafter with reference to the drawings in an exemplary but not restrictive manner.The same reference signs in the drawings indicate the same or similar components or parts.The skilled person should understand that these drawings are not necessarily drawn to scale.In the drawings:

[0019] Figure 1 is a perspective view of a sheet spring of the preferred embodiment of the present application;

[0020] Figure 2 is a schematic diagram of the overall structure of the preferred embodiment of the present application;

[0021] Figure 3 is an exploded view of the overall structure of the preferred embodiment of the present application;

[0022] Figure 4 is a sectional view of the overall structure of the preferred embodiment of the present application;

[0023] Figure 5 is a top view of the positioning base of the preferred embodiment of the present application.

[0024] In the drawings, the following reference signs are used:

[0025] 1, pressing plate; 2, base; 3, positioning base; 31, positioning block; 32, limiting block; 4, positioning member; 5, pulling-out hole; 6, force measuring pin; 7, sheet spring; 8, avoiding hole; 9, hole; 10, limiting slot; 11, clamping plate; 12, embedding groove; 13, roller; 14, pin shaft. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0029] Reference Figure 1 and Figure 2The utility model provides a kind of sheet spring pull-out force detection tool in automatic transmission, this detection tool is used with general type force measuring equipment.

[0030] Specifically, referring to Figure 1 、 Figure 2 And Figure 3 , it includes pressing plate 1, base 2, positioning base 3 and positioning piece 4, wherein the end face area of pressing plate 1 and base 2 is the same and is set as rectangle; pulling-out hole 5 is set on pressing plate 1, and force measuring pin 6 is inserted in pulling-out hole 5; base 2 is set below pressing plate 1, and avoiding hole 8 is set on base 2 corresponding to pulling-out hole 5; general type force measuring equipment pushes and presses force measuring pin to drive its longitudinal movement, so as to push and press pin shaft 14 in sheet spring, the diameter of force measuring pin 6 is equal to or less than the diameter of pin shaft 14 in sheet spring 7, and the inner diameter of avoiding hole 8 is greater than the diameter of pin shaft 14 in sheet spring 7. When the pull-out force test of pin shaft 14 of sheet spring 7 is carried out, the normal work of force measuring pin 6 and the pulling of force measuring pin 6 are ensured.

[0031] Referring to Figures 2-5 , positioning base 3 is set between base 2 and pressing plate 1, and positioning base 3 is used for clamping sheet spring 7 to realize front and back, left and right limiting, sheet spring 7 clamped in positioning base 3 is limited up and down by base 2 and pressing plate 1, and the to-be-side pin shaft 14 on sheet spring 7 clamped on positioning base 3 is coaxially set with pulling-out hole 5 and avoiding hole 8; positioning piece 4 is used for positioning connection of pressing plate 1, positioning base 3 and base 2, to ensure that the coaxial precision of to-be-side pin shaft 14 on sheet spring 7 and pulling-out hole 5 and avoiding hole 8 is further improved after the assembly of the detection tool. Positioning piece 4 adopts positioning pin, positioning pin longitudinally penetrates pressing plate 1, positioning base 3 and base 2, and positioning pin is set as rectangle, which can avoid mutual rotation of base 2, positioning base 3 and pressing plate 1, and improve the stability of the whole.

[0032] Referring to Figures 2-5The positioning base 3 comprises a positioning block 31 and a limiting block 32 arranged on one side of the positioning block 31 and used for passing through the end hole 9 of the sheet spring 7, the limiting block 32 is shaped to be matched with the shape of the end hole 9 of the sheet spring 7, one side of the limiting block 32 is provided with a limiting slot 10, a clamping plate 11 is inserted in the limiting slot 10, the width of the clamping plate 11 is greater than the width of the limiting slot 10, the clamping plate 11 extends longitudinally and penetrates the pressing plate 1 and the base 2, one side of the positioning block 31 and located at one side of the limiting block 32 is provided with an embedding slot 12 used for embedding the roller 13 of the sheet spring 7, the embedding slot 12 is coaxially arranged with the avoiding hole 8 and the pulling-out hole 5, the thickness between one side of the positioning block 31 and the side of the limiting slot 10 close to the one side of the positioning block 31 is the same as the thickness of the sheet spring 7, when the end hole 9 of the sheet spring 7 is sleeved on the limiting block 32, at this time, the roller 13 on the sheet spring 7 is partially embedded in the embedding slot 12, then the bottom end of the clamping plate 11 is sequentially passed through the limiting slot 10 and the base 2 from the pressing plate 1 downwards, at this time, the clamping plate 11 is tightly attached to one side of the sheet spring 7, then the sheet spring 7 is limited in the front-rear direction under the action of the positioning block 31 and the clamping plate 11, wherein the roller 13 of the sheet spring 7 is partially embedded in the embedding slot 12, and the end hole 9 of the sheet spring 7 is sleeved on the limiting block 32, the sheet spring 7 is limited in the left-right direction under the action of the limiting block 32. The clamping plate 11 is arranged in a rectangular shape, and the fixing firmness of the sheet spring 7 can be improved. The limiting block 32 can be arranged in two, and the two limiting blocks 32 are symmetrically arranged along the longitudinal center line of the embedding slot 12, and any one of the two limiting blocks 32 can be selected to fix the sheet spring 7 in use.

[0033] In summary, the sheet spring 7 is fixed by the pulling-out force detection tool, then the detection tool is installed in a general detection equipment, the universal force detection equipment is used to push and press the force detection pin 6, the pressure is applied to the pin shaft 14 in the axial direction by the force detection pin 6, so that the maximum pressure data of the pin shaft 14 is obtained, and the data can be used as the assembly firmness result of the sheet spring 7, therefore, the detection tool and the universal force detection equipment are used in cooperation, the force of the special-shaped sheet spring 7 can be tested, and the special pulling-out force detection equipment for the sheet spring 7 is not needed, so that the cost is saved.

[0034] The above embodiment is only used for describing the technical concept and characteristics of the utility model, the purpose is to enable the person skilled in the art to understand the content of the utility model and implement the utility model, and cannot limit the protection scope of the utility model, and equivalent changes or modifications according to the essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A sheet spring pullout force detection tool in an automatic transmission, characterized by, The utility model relates to a kind of spring testing device, including: Pressing plate (1), the pressing plate (1) is provided with pull-out hole (5), force measuring pin (6) is inserted in pull-out hole (5); Base (2);The base (2) is arranged below the pressing plate (1), and the base (2) is provided with the hole (8) of avoiding in the position corresponding to the pull-out hole (5); Positioning base (3), the positioning base (3) is arranged between the base (2) and the pressing plate (1), and the positioning base (3) is used to clamp the sheet spring (7) and realize front and back, left and right limit, the side pin shaft (14) on the sheet spring (7) clamped on the positioning base (3) is coaxially arranged with the pull-out hole (5), the hole (8) of avoiding; Positioning member (4), the positioning member (4) is used for positioning connection of the pressing plate (1), positioning base (3) and base (2).

2. The sheet spring pullout force detection tool in an automatic transmission according to claim 1, characterized by, The positioning base (3) includes positioning block (31) and the limiting block (32) for passing through the end hole of the sheet spring (7) on one side of the positioning block (31), one side of the limiting block (32) is provided with limiting slot (10), the limiting slot (10) is inserted with clamping plate (11), the clamping plate (11) extends longitudinally and is through the pressing plate (1), base (2), one side of the positioning block (31) and located in one side of the limiting block (32) is provided with embedding groove (12) for embedding the roller of the sheet spring (7), the thickness between one side of the positioning block (31) and the side of the limiting slot (10) close to it is same with the thickness of the sheet spring (7).

3. The sheet spring pullout force detection tool in an automatic transmission according to claim 2, characterized by, The shape of the limiting block (32) is adapted to the shape of the end hole of the sheet spring (7).

4. The sheet spring pullout force detection tool in an automatic transmission according to claim 2 or 3, characterized by, The positioning member (4) adopts positioning pin, and the positioning pin is longitudinally through the pressing plate (1), the positioning base (3) and the base (2).

5. The sheet spring pullout force detection tool in an automatic transmission according to claim 4, characterized by, The positioning pin and the clamping plate (11) are both arranged in rectangular.

6. The sheet spring pullout force detection tool in an automatic transmission according to claim 1 or 5, characterized by, The diameter of the force measuring pin (6) is equal to or less than the diameter of the pin shaft in the sheet spring (7), and the inner diameter of the hole (8) of avoiding is greater than or equal to the diameter of the pin shaft in the sheet spring (7).

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