Hump caliper
By designing the hump caliper of the L-shaped measuring part and the guide rail sliding handheld device, the problem that traditional calipers cannot measure complex structures and small contact area is solved, and the precise measurement of I-shaped workpieces and the protection of calipers are achieved.
Patent Information
- Application Number
- CN202422344610.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-25
AI Technical Summary
Traditional vernier calipers cannot measure workpieces of complex structures, such as I-shaped cross-sections, and small contact area leads to large measurement errors, which can easily damage the calipers.
The first and second measuring parts of the hump caliper are designed with an L-shaped structure, with a wide measuring face provided at the tail end, and the handheld device and friction transmission push device are slided through the guide rail to avoid direct grabbing and excessive force, and reduce wear.
Accurate measurement of I-shaped workpieces is achieved, measuring errors are reduced, calipers are protected from wear and improving measurement quality.
Smart Images
Figure CN223122086U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring instruments, in particular to a hump caliper. Background Technique
[0002] A caliper, or a vernier caliper, is a commonly used measuring tool. Especially in the field of mechanical manufacturing, a vernier caliper is usually used to measure the dimensions of manufactured products. Due to its own structure, especially due to the measuring jaws, the traditional vernier caliper cannot measure the dimensions of products with relatively complex structures. For example, Figure 3 As shown, to measure the dimensions of the middle structure of a workpiece with an I-shaped cross-section, the traditional vernier caliper cannot measure it because the middle structure of this workpiece is relatively deep, and the measuring jaws of the traditional vernier caliper cannot contact the surface to be measured of the workpiece.
[0003] At the same time, the contact area between the traditional vernier caliper and the surface to be measured of the workpiece is small. The small contact area makes the workpiece prone to deformation when being measured, which easily leads to measurement errors. At the same time, the traditional vernier caliper usually does not have a structure for picking up the caliper and a structure for preventing the driving force from being too large when pushing the vernier scale to contact the surface to be measured, resulting in the caliper being easily damaged and its measuring jaws being easily worn.
[0004] Therefore, a hump caliper is needed. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a hump caliper to solve the problems raised in the above background technique.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] A hump caliper includes a main scale body and a vernier scale body slidably installed in the main scale body. A first measuring part is formed on the bottom surface of the main scale body, and a second measuring part corresponding to the first measuring part is formed on the bottom surface of the main scale body. Both the first measuring part and the second measuring part are in an L-shaped structure. The tails of the first measuring part and the second measuring part are respectively connected to a first measuring surface body and a second measuring surface body having a measuring contact surface with a certain width. The width of the measuring contact surface is larger than the cross-sectional dimension of the L-shaped structure.
[0008] Preferably, guide rails are suspended at both ends of the main scale body through connectors, and a hand-held device is slidably arranged in the guide rails. The hand-held device is used for a measuring person to hold and pick up the hump caliper.
[0009] Preferably, the handheld device includes a holding portion in the middle and a stopper body arranged at both ends of the holding portion, a pressing slide body is slidably arranged in the stopper body, the pressing slide body is integrally formed with a pressure piece facing the guide rail, an elastic buckle is formed in the stopper body, a clamping portion corresponding to the elastic buckle is formed in the pressing slide body, and the elastic buckle can be buckled into the clamping portion to lock the handheld device from sliding in the guide rail.
[0010] Preferably, the front end of the guide rail is connected to the front end of the main scale body through a front end connecting frame, and is connected to the rear end of the main scale body through a rear end connecting frame and a pushing device in turn, and the pushing device is used to push the vernier scale body to slide in the main scale body.
[0011] Preferably, the pushing device includes a box body, a winding assembly and a transmission wheel connected by friction transmission in the box body, and a toggle wheel connected to the transmission wheel by meshing transmission. The winding assembly is provided with a winding strip that can be rotatably wound, and the toggle wheel is driven to release the winding strip to push the vernier scale body to slide.
[0012] Preferably, the guide rail or main ruler body is slidably provided with a guide slide extending between the box body and the vernier ruler body, and the guide slide is provided with a guide hole for the winding strip to slide and shuttle, and the guide hole guides the winding strip to always point to the end face of the vernier ruler body for pushing.
[0013] Preferably, a convex portion is formed at the tail end of the winding strip, and the convex portion is used to limit the winding strip from escaping from the guide hole.
[0014] Preferably, the bottom surface of the vernier scale body forms a finger push portion for the measurement personnel to contact and push the vernier scale body with their thumb.
[0015] Preferably, the bottom surface of the finger push portion is provided with anti-slip grooves.
[0016] Preferably, the first measuring surface body and the second measuring surface body are rotatably connected to the tail ends of the first measuring part and the second measuring part respectively, and the tail ends of the first measuring part and the second measuring part are also formed with support ribs for supporting and preventing the first measuring surface body and the second measuring surface body from moving when rotating.
[0017] Compared with the prior art, the beneficial effects of the utility model are:
[0018] 1. The utility model designs the first measuring part and the second measuring part of the vernier caliper to be L-shaped structures, and arranges the first measuring surface body and the second measuring surface body with relatively wide measuring contact surfaces at the tail ends of the first measuring part and the second measuring part, so that the middle structure of the workpiece with an I-shaped cross section can be measured, and the workpiece shape is relatively small during measurement, and the measurement error is small.
[0019] 2. The utility model is provided with a guide rail suspended by a connecting piece, and a hand-held device is slidably provided in the guide rail. The hand-held device is used for the measurement personnel to hold the hump caliper, thereby avoiding the measurement personnel from directly grasping the hump caliper and being easily corroded by hand oil, thereby reducing wear.
[0020] 3. The utility model is provided with a pushing device, and the pushing transmission connection inside the pushing device is a friction transmission connection. When the pushing force is greater than a certain value, the transmission slips, so that the first measuring surface body and the second measuring surface body respectively clamp the workpiece to be measured without generating a force exceeding the value, thereby avoiding damage and improving the measurement quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a front view of the utility model;
[0022] Figure 2 for Figure 1 A partial enlarged view of middle A;
[0023] Figure 3 This is a schematic diagram of the measurement state of the utility model;
[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model at a first viewing angle;
[0025] Figure 5 for Figure 4 A partial enlarged view of B in the middle;
[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the utility model at a second viewing angle;
[0027] Figure 7 for Figure 6 A partial enlarged view of middle C;
[0028] Figure 8 for Figure 6 A partial enlarged view of D in the middle;
[0029] Figure 9 It is a schematic diagram of the three-dimensional structure of the utility model at a third viewing angle.
[0030] In the figure: 1-main ruler body; 2-vernier ruler body; 22-finger push part; 23-anti-slip groove; 3-first measuring part; 31-first measuring surface body; 32-support rib; 4-second measuring part; 41-second measuring surface body; 5-connecting piece; 51-front connecting frame; 52-rear connecting frame; 6-guide rail; 7-handheld device; 71-blocking body; 72-pressing slide body; 73-pressing sheet; 74-elastic buckle; 75-clamping part; 8-pushing device; 81-box; 82-winding assembly; 83-winding strip; 84-transmission wheel; 85-moving wheel; 86-limiting part; 87-convex part; 9-guide slide. Detailed implementation manners
[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0032] As Figure 3 shown, the hump caliper of the present utility model is used to measure workpieces with a relatively deep part to be measured having an I-shaped cross-section, such as common I-beams and the like.
[0033] As Figure 1 shown in the front view of the present utility model, the present utility model is a hump caliper. Specifically, it includes a main scale body 1 and a vernier scale body 2 slidably installed in the main scale body 1. A first measuring part 3 is formed on the bottom surface of the main scale body 1, and a second measuring part 4 corresponding to the first measuring part 3 is formed on the bottom surface of the main scale body 1. Both the first measuring part 3 and the second measuring part 4 are in an L-shaped structure, and the tails of the first measuring part 3 and the second measuring part 4 are respectively connected to a first measuring surface body 31 and a second measuring surface body 41 having a measuring contact surface with a certain width; when in use, as Figure 3 shown, during measurement, the measuring surface of the first measuring surface body 31 is abutted and attached to the left side surface of the workpiece, and at the same time, the measuring surface of the second measuring surface body 41 is abutted and attached to the right side surface of the workpiece. The thickness dimension of the middle structure of the workpiece can be obtained through the reading on the vernier scale body 2.
[0034] Particularly, the width of the measuring contact surface (i.e., the measuring surfaces of the first measuring surface body 31 and the second measuring surface body 41) of the present utility model is larger than the cross-sectional dimension of the L-shaped structure. Preferably, it is at least twice as large, or the width of the measuring surface is selected according to the specific use scenario. The larger the area of the measuring surface, the larger the area of contact with the workpiece during measurement, and the smaller the measurement error.
[0035] Furthermore, as Figure 1 , Figure 6 and Figure 8 shown, the hump caliper is provided with a locking device on the top surface of the vernier scale body 2. Specifically, the locking device is a fastening screw that penetrates the vernier scale body 2 and presses against the main scale body 1 to lock the movement of the vernier scale body 2 through the fastening screw; furthermore, a finger-pushing part 22 is formed on the bottom surface of the vernier scale body 2, and anti-slip lines 23 are provided on the bottom surface of the finger-pushing part 22. When it is necessary to push the vernier scale body 2, the measurer touches the anti-slip lines 23 with the thumb and applies force left and right to push the vernier scale body 2 to slide.
[0036] Further, as shown in Figure 1 , Figure 4 , Figure 6 and Figure 9 , the first measuring surface body 31 and the second measuring surface body 41 are respectively rotatably connected to the ends of the first measuring part 3 and the second measuring part 4, that is, the first measuring surface body 31 and the second measuring surface body 41 can rotate relative to the first measuring part 3 and the second measuring part 4 to change the angular position, improving the measurement adaptability. When the width direction of the surface to be measured of the workpiece cannot accommodate the first measuring surface body 31 or the second measuring surface body 41, the first measuring surface body 31 or the second measuring surface body 41 vertically oriented as shown in Figure 4 can be rotated to a horizontal orientation so that it can be placed on the surface to be measured of the workpiece; further, support ribs 32 are formed at the ends of the first measuring part 3 and the second measuring part 4 to support and prevent the first measuring surface body 31 and the second measuring surface body 41 from shifting during rotation. When the vertically oriented first measuring surface body 31 or the second measuring surface body 41 is rotated to a horizontal orientation, the support ribs 32 are used to support the horizontal first measuring surface body 31 or the second measuring surface body 41, preventing the situation of unstable support and shifting relying solely on the first measuring part 3 or the second measuring part 4.
[0037] Usually when using this hump caliper, the hump caliper is often taken out of the storage box by hand. The hump caliper is a measuring tool with relatively high precision. At the same time, it is inevitable that the hands of the measuring personnel have sweat and oil, and these sweat and oil are likely to corrode the hump caliper. Therefore, in order to reduce the frequency of the measuring personnel touching the hump caliper, the present utility model is further optimized. Specifically, as shown in Figure 1 , Figure 4 , Figure 6 and Figure 9 , guide rails 6 are suspended at both ends of the main scale body 1 through connectors 5, and a hand-held device 7 is slidably arranged in the guide rails 6. Specifically, as shown in Figure 4 , the front end of the guide rail 6 is connected to the front end of the main scale body 1 through a front-end connecting frame 51, and is sequentially connected to the rear end of the main scale body 1 through a rear-end connecting frame 52 and a pushing device 8.
[0038] Further, in order to prevent the hand-held device 7 from sliding left and right along the guide rail 6 unstably when the measuring personnel hold the hand-held device 7, the present utility model is further optimized. Specifically, as shown in Figure 5 and Figure 7 , the hand-held device 7 includes a middle holding part and stoppers 71 arranged at both ends of the holding part. A pressing slider 72 is slidably arranged in the stoppers 71, and a pressing piece 73 facing the guide rail 6 is integrally formed on the pressing slider 72. When the measuring personnel press the pressing slider 72 with their hands, the pressing piece 73 can hold the guide rail 6 tightly, so that the hand-held device 7 is locked and will not slide left and right in the guide rail 6; further, as shown in Figure 7As shown, an elastic buckle 74 is also formed in the blocking body 71, and the elastic buckle 74 is a raised elastic structure. A clamping portion 75 corresponding to the elastic buckle 74 is formed in the pressing slide 72. Accordingly, the clamping portion 75 has a concave structure. When the pressing slide 72 is pressed, the elastic buckle 74 can be buckled into the clamping portion 75 to lock the handheld device 7; at this point, the measurement personnel can slide the handheld device 7 to a suitable position and then the elastic buckle 74 can be buckled into the clamping portion 75 to lock the position, and the measurement personnel can pick up the hump caliper by holding the handheld device 7, avoiding the measurement personnel from frequently directly contacting the hump caliper, ensuring the cleanliness of the hump caliper and preventing corrosion.
[0039] In order to prevent the first measuring surface body and the second measuring surface body from generating excessive force (force that may easily damage the workpiece) when they respectively clamp the workpiece to be measured, the pushing device 8 is further optimized to include a box body 81, a winding assembly 82 and a transmission wheel 84 connected by friction transmission in the box body 81, and a toggle wheel 85 connected by meshing transmission to the transmission wheel 84. A winding strip 83 is rotatably wound in the winding assembly 82. The winding strip 83 is a straight strip with a certain elasticity. It is usually wound into the winding assembly 82 and can be wound in the elastic state when released. When in use, the toggle wheel 85 is driven to drive the winding strip 83 to be released and push the vernier ruler body 2 to slide in the main ruler body 1. When the second measuring surface body 41 abuts against the surface of the workpiece to be measured, continuing to toggle the toggle wheel 85 will increase the abutting force. When the force reaches a certain value, due to the friction transmission connection between the winding assembly 82 and the transmission wheel 84, the friction force will cause the winding assembly 82 and the transmission wheel 84 to slip when a certain transmission force is reached, thereby no longer increasing the abutting force and preventing the workpiece from being damaged.
[0040] Due to different measuring environments, some hump calipers are very long. The length makes it impossible for the winding strip 83 released from the box 81 to keep pushing the end surface of the vernier ruler body 2. Therefore, it is necessary to further optimize the utility model. Specifically, Figure 4 , Figure 6 , Figure 8 and Figure 9As shown, a guide slide 9 extending between the box body 81 and the vernier scale body 2 is slidably provided on the guide rail 6 or the main scale body 1, and the guide slide 9 can slide along the length direction of the main scale body 1, and a guide hole for the winding strip 83 to slide and shuttle is provided in the guide slide 9. Accordingly, a convex portion 87 is formed at the tail end of the winding strip 83, and the convex portion 87 can limit the winding strip 83 from being separated from the guide hole, that is, to prevent the winding strip 83 from being completely wound back into the box body 81 and unable to be pulled out again. The guide slide 9 can slide to a suitable position along the length direction of the main scale body 1, and the guide hole thereon guides the winding strip 83, so that the end of the winding strip 83 always points to the end face of the vernier scale body 2, and pushes the vernier scale body 2 against the end face.
[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A hump caliper, comprising a main scale body (1) and a vernier scale body (2) slidably mounted in the main scale body (1). A first measuring portion (3) is formed on the bottom surface of the main scale body (1), and a second measuring portion (4) corresponding to the first measuring portion (3) is formed on the bottom surface of the main scale body (1). It is characterized in that: The first measuring portion (3) and the second measuring portion (4) are both L-shaped structures, and the tail ends of the first measuring portion (3) and the second measuring portion (4) are respectively connected to a first measuring surface body (31) and a second measuring surface body (41) having a measuring contact surface of a certain width, and the width of the measuring contact surface is larger than the cross-sectional dimension of the L-shaped structure.
2. The hump caliper according to claim 1, wherein: Guide rails (6) are suspended at both ends of the main ruler body (1) via connecting pieces (5), and a handheld device (7) is slidably provided in the guide rails (6). The handheld device (7) is used for a measuring person to hold the camelback caliper.
3. The hump caliper according to claim 2, characterized in that: The handheld device (7) comprises a gripping portion in the middle and a stopper (71) arranged at both ends of the gripping portion, a pressing slide (72) being slidably arranged in the stopper (71), the pressing slide (72) being integrally formed with a pressing sheet (73) facing the guide rail (6), an elastic buckle (74) being formed in the stopper (71), a clamping portion (75) corresponding to the elastic buckle (74) being formed in the pressing slide (72), the elastic buckle (74) being able to be buckled into the clamping portion (75) to lock the handheld device (7) from sliding in the guide rail (6).
4. A hump caliper according to claim 2, wherein: The front end of the guide rail (6) is connected to the front end of the main scale body (1) via a front end connecting frame (51), and is connected to the rear end of the main scale body (1) via a rear end connecting frame (52) and a pushing device (8) in turn. The pushing device (8) is used to push the vernier scale body (2) to slide in the main scale body (1).
5. A hump caliper according to claim 4, characterized in that: The pushing device (8) comprises a box body (81), a reeling assembly (82) and a transmission wheel (84) arranged in the box body (81) and connected by friction transmission, and a toggle wheel (85) meshingly connected to the transmission wheel (84); a reeling bar (83) is rotatably reeled in the reeling assembly (82); the toggle wheel (85) is driven to drive the reeling bar (83) to release and push the vernier ruler body (2) to slide.
6. The hump caliper according to claim 5, wherein: The guide rail (6) or the main ruler body (1) is slidably provided with a guide slide (9) extending between the box body (81) and the vernier ruler body (2), and the guide slide (9) is provided with a guide hole for the winding strip (83) to slide and shuttle through, and the guide hole guides the winding strip (83) to always point to the end surface of the vernier ruler body (2) for pushing.
7. The hump caliper according to claim 6, characterized in that: A convex portion (87) is formed at the rear end of the winding strip (83), and the convex portion (87) is used to limit the winding strip (83) from escaping from the guide hole.
8. A hump caliper according to any one of claims 2 to 7, characterized in that: The bottom surface of the vernier scale body (2) forms a finger push portion (22) for a measurement person to contact and push the vernier scale body (2) with his thumb.
9. A hump caliper according to claim 8, characterized in that: The bottom surface of the finger-pushing portion (22) is provided with anti-slip grooves (23).
10. A hump caliper according to any one of claims 2 to 7 or claim 9, characterized in that: The first measuring surface body (31) and the second measuring surface body (41) are rotatably connected to the tail ends of the first measuring part (3) and the second measuring part (4), respectively; the tail ends of the first measuring part (3) and the second measuring part (4) are also provided with support ribs (32) for supporting and preventing the first measuring surface body (31) and the second measuring surface body (41) from moving when rotating.